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81 job
1. n1) работа, занятие3) (the job) брит. полит. жарг. полицейская служба•to abolish smb's job — упразднять чью-л. должность
to be after smb's job — подсиживать кого-л.
to be under suspension from one's job — быть временно не допущенным к работе
to boycott one's job — не занимать свои рабочие места
to confirm smb in a job — утверждать кого-л. в какой-л. должности
to dismiss smb from his job — увольнять кого-л. с работы
to do a job — выполнять / делать работу
to give a job — предоставлять, давать работу
to go back to one's jobs — возвращаться на работу ( после забастовки)
to have an open-ended tenure in a job — иметь право занимать какую-л. должность без ограничения срока
to land a job — разг. получать работу
to nominate smb for the job — назначать кого-л. на данную должность
to walk off / out of a job — забастовать
- a lot of jobs are at staketo work within the bounds of one's job — действовать в пределах своих полномочий
- bad job
- black bag job
- blue-collar job
- bonus job
- corporate job
- creation of new jobs
- cuts in jobs
- dead-end job
- entry-level job
- extra job
- full-time job
- highly paid job
- holder of a job
- job for life
- loss of a job
- low-paid job
- managerial job
- odd job
- on the job
- one-man job
- out of a job
- overtime job
- painstaking job
- part-time job
- people without jobs
- permanent job
- piecework job
- plum job
- private-sector job
- productive job
- professional job
- public-works job
- put-up job
- restricted job
- risky job
- rush job
- short-run job
- steady job
- temporary job
- unrestricted job
- vacant job
- well-paid job
- white-collar job 2. v -
82 tour
1. nтурне, поездка, турto abandon one's overseas tour — отказываться от своего зарубежного турне
to embark on a tour of — начинать поездку по...
- fact-finding tourto pay one's whistle-stop tour to a number of capitals — совершать поездку с краткими остановками в столицах ряда государств
- final stage of smb's tour
- leg of smb's tour
- month-long tour of a country
- on an overseas tour
- sex tour
- six-nation tour
- speaking tour
- study tour
- the tour will take him to...
- whistle-stop tour
- wine tour
- working tour 2. vсовершать турне, совершать поездку -
83 work
1. n1) работа, труд; производство2) печатный труд, сочинение, произведение3) pl предприятие4) pl механизм•to appeal to smb to return to work — призывать кого-л. вернуться на работу
to be the work of smb — быть делом рук кого-л.
to carry on / out work — выполнять / делать работу, заниматься работой
to conduct / to do work — выполнять / делать работу, заниматься работой
to co-ordinate the economic and social work — координировать экономическую и социальную деятельность
to cut / to lessen / to reduce the hours of work — сокращать рабочий день
to direct and co-ordinate smb's work — направлять и координировать чью-л. деятельность
to do the donkey work — разг. вкалывать, ишачить
to focus the work on economic and social development — сосредоточивать работу на социально-экономическом развитии
to initiate work — начинать работу, приступить к работе
to inspect smb's work — проверять чью-л. работу
to intensify the work — усиливать работу, интенсифицировать труд
to perform the work — выполнять / делать работу, заниматься работой
to pour sand in the work — перен. вставлять палки в колеса
to return to work — возвращаться на работу (напр. после забастовки)
to stay away from work — не выходить на работу; бастовать
to stop work — прекращать работу, бастовать
to supplement the work of smb — дополнять чью-л. работу
- active workto undertake work — браться за / начинать / предпринимать работу
- allotment of work
- amount of work
- brain work
- casual work
- classified work
- collective work
- contract work
- contractual work
- creative work
- cultural work
- day-to-day work
- dead horse work
- decontamination work
- development work
- disincentive to work
- educational work
- efficient work
- emergency work
- explanatory work
- extra work
- field work
- fruitful work
- full-time work
- habits of work
- hand work
- hard work
- health work
- ideological work
- improvement in work
- in search of work
- independent work
- international work
- joint work
- killing work
- low-paid work
- maintenance work
- manual work
- mental work
- odd work
- office work
- organizational work
- out of work
- overtime work
- pace of work
- part-time work
- person out of work
- physical work
- pick-and-shovel work
- Pickle Work
- piece work
- political work
- practical work
- preliminary work
- preparatory work
- productive work - public sector work
- public work
- publicity work
- quality of work
- regular work
- relief work
- research work
- return to work - rush work
- schedule work
- seasonal work
- short-time work
- skilled work
- skunk work
- slovenly work
- social work
- subsidiary work
- task work
- team work
- temporary work
- theoretical works
- those in work
- time work
- undercover works
- vital work
- volunteer work
- wage work
- wet work
- work in process
- year-round work 2. vработать; трудитьсяto work closely with smb — тесно сотрудничать с кем-л.
to work for Jesus — жарг. "работать на дядю" ( бесплатно выполнять дополнительную работу)
to work out — разрабатывать (план и т.п.)
to work together — работать вместе; сотрудничать
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84 device
1) устройство; приспособление; механизм2) аппарат; прибор•- absolute position measuring device
- accident preventing device
- accounting device
- activation device
- actuation device
- add-on device
- adjusting device
- adjustment device
- alarm device
- alignment device
- alpha-numeric output display device
- AND device
- anticollision device
- anticreep device
- antipumping device
- antirotation device
- arc-control device
- assemblage device
- assembly feed device
- assembly-and-disassembly device
- attenuation measuring device
- automated material/part handling device
- automatic compression release device
- automatic jaw shift device
- automatic program locate device
- automatic tracking device
- automatic workhandling device
- auxiliary device
- backlash elimination device
- balancing device
- bar feeding device
- beam lead device
- belt-on control device
- belt-shifting device
- bistable device
- blocking device
- breakaway device
- breakaway safety device
- bridge device
- bridging device
- broach-handling device
- bubble memory device
- bucket-brigade device
- built-in diagnostic device
- burr-removing device
- calculation device
- camming device
- canted device
- cartridge magnetic tape data origination device
- catch device
- catching device
- center-locating device
- central control device
- chain-stretching device
- charge-coupled device
- charging device
- checking device
- chip control device
- chip flushing device
- choice device
- chuck jaw-changing device
- chuck jaw-forming device
- chuck location device
- chucking device
- circular milling device
- clamping device
- clearance device
- clearing device
- clever device
- clutch antirotation device
- CMOS device
- code device
- coded automatic reader device
- collet release device
- compensating device
- complete device
- compliance device
- compliant device
- computer access device
- conditioning device
- connected speech voice input device
- constant torque device
- contact sealing device
- continuously variable adjustment device
- control device
- control/monitor device
- controlled device
- controlling device
- conveying/loading device
- coolant transfer device
- copy device
- copying device
- correcting device
- countdown device
- counter device
- counter-indicating device
- counter-switching device
- counting device
- coupling device
- crane device
- cross rail clamping device
- custom device
- cutoff device
- cut-out device
- cutter angle testing device
- cutter-checking device
- cutter-trueing device
- cutting device
- damping device
- data origination device
- data storage device
- data-setting device
- deburring device
- deep hole tapping device
- delta-connected device
- detachable device
- detecting device
- diagnostic device
- differential device
- differential speed reduction device
- digital measuring device
- dimension monitoring device
- directed beam display device
- discrete output device
- disk storage device
- display device
- distributive numerical control device
- dividing device
- dressing device
- drive device
- driven device
- driving roller device
- duplicating device
- educational device
- EEPROM device
- electric control device
- electronic storage device
- emergency cutoff device
- emergency stop device
- emergency-knockoff device
- emptying device
- end device
- end-finishing device
- end-machining device
- end-of-arm tooling safety device
- energy storage device
- error-detection device
- error-sensing device
- escapement device
- etching device
- executive device
- expandable holding device
- external read-in device
- fastening device
- feed control device
- feeding device
- fixed length stroke device
- fixing device
- fixturing device
- floppy magnetic disk data origination device
- flow control device
- fluid logic device
- fluid pressure-operated device
- focusing device
- follow-up device
- functional control device
- functional switching device
- galvanic device
- gas discharge device
- grabbing device
- graphic input device
- gravitational separating device
- gravity device
- gripping device
- guard device
- guide device
- handling device
- hard-wired command-and-control device
- height setting-and-measuring device
- helical milling device
- hoisting device
- hold-down device
- holding device
- holding down device
- hole-locating device
- honing device
- hopper-type loading device
- I.D. datum device
- IC device
- ignition device
- image-digitizing device
- indexing device
- indicating device
- information-processing device
- in-line device
- in-process gaging device
- in-process storage device
- input device
- inspection device
- insulation monitoring device
- intelligence device
- interference detection device
- interlock device
- interlocking device
- isolated word voice input device
- isolating device
- jaw shift device
- jet device
- joint device
- knock-off device
- labor-saving device
- laser modulation device
- laser protection device
- laser pumping device
- laser scanned devices
- latching device
- lift device with insulating arm
- lift device
- lifting device
- limiting device
- linear measuring device
- load/unload device
- load-handling device
- loading/unloading device
- locating device
- locking device
- low-frequency galvanic device
- lubricating device
- M code device
- machine retaining device
- machine-dedicated device
- machining device
- magnetic card data origination device
- magnetic domain device
- magnetic holding device
- magnetic medium data origination device
- magnetic medium input device
- magnetic medium output device
- magnetic tape data origination device
- manual input device
- manual programming device
- marking device
- master device
- master locating device
- matching device
- materials-handling device
- measuring device
- mechanical switching device
- mechanical system diagnostic device
- memory device
- mending device
- metering device
- metrology room device
- microfilm input device
- micrometric displacement device
- miter-cutting device
- monitoring device
- monostable device
- motion translation device
- movement position device
- multichannel analyzer device
- multipallet automatic pallet-changing device
- multipart clamping device
- multiple switching device
- multipoint measuring device
- NC automatic sizing device
- NC positioning device
- NC-controlled handling device
- noise-attenuating device
- noise-eliminating device
- nonsynchronous loading device
- NOVRAM device
- numerical control device
- O.D. datum device
- off-line device
- offloading device
- offtake device
- oiling device
- oleodynamic device
- on-line device
- operating device
- operation-performing device
- optical reading device
- optical scanning device
- optoelectronic device
- OR device
- orienting device
- output device
- oval turning device
- overload device
- overload protection device
- overload release device
- overload safety device
- overload-detecting device
- pallet load/unload device
- pallet locating-and-clamping device
- pallet shuttle device
- pallet transfer device
- pallet transport device
- part handling-and-storage device
- part present device
- part presentation device
- part probing device
- partitioning device
- part-marking device
- pen-equipped device
- peripheral recording device
- permanent insulation monitoring device
- photocopying device
- photoelectric device
- photoelectric semiconductor device
- photosensitive device
- pick device
- pick-and-place device
- pickup device
- pipe-cutting device
- pipe-shearing device
- plotting device
- pointer device
- pointer-type device
- poligon-cutting device
- polyphase device
- polyphase electrical device
- position control device
- positioning device
- power chucking device
- power-assisted clamping device
- preselector device
- presence sensing device
- pressure abnormal fall detecting device
- pressure fall preventing device
- printing device
- probe control device
- probe-changing device
- probing device
- process-monitoring device
- profiling device
- program transfer device
- programmable device
- programmable wheel trueing device
- projection optical device
- propulsion device
- propulsive device
- protecting device
- punch card input/output device
- punch card output device
- punch tape data origination device
- punch tape input/output device
- punch tape output device
- radial stretching device
- radiation-hardened device
- radius planing device
- radius trueing device
- rail-clamping device
- rail-setting device
- RAM card device
- RAM storage device
- raster display device
- ratchet closing device
- RCC device
- reading device
- readout device
- recognition device
- recording device
- regulating device
- relay device
- releasing device
- relief device
- relieving device
- remote maintenance device
- resetting device
- resolver position measuring device
- rest device
- restraint device
- retaining device
- retrieval device
- return spring device
- reversing device
- rewriting device
- right-angle orientating device
- robot device
- robot load/unload device
- robot part-handling device
- robotic device
- robotic inspection device
- robotic loading device
- robot-like device
- roll feed device
- rotary machining device
- rotating device
- safety control device
- safety device
- safety interlock device
- safety slipping device
- scanning device
- scraping device
- screening device
- screw copying device
- screw locking device
- sealing device
- search device
- searching device
- securing device
- self-balancing device
- self-diagnosis device
- self-gripping device
- semiconductor device
- semiconductor power device
- semiconductor switching device
- sending device
- sensing device
- sensor device
- serial device
- setting device
- short-time memory device
- shut-down device
- shut-off device
- shutting-off device
- sighting device
- signaling device
- single-lever locking device
- single-phase device
- single-phase electrical device
- single-pole switching device
- sizing device
- skew-compensating device
- slitter device
- slowing-down device
- smart device
- smart power device
- snap-action switching device
- sonic device
- special machine retaining device
- speed reduction device
- speed-limit device
- speed-limiting device
- spindle-keylock device
- spindle-keylocking device
- spiral milling device
- split clamping device
- spring balancing device
- star-connected device
- starting device
- static switching device
- steadying device
- stocking device
- stop device
- stopping device
- storage device
- stretching device
- strip-off device
- stroke device
- surface-mount device
- swing arm device
- switch device
- switching device
- switching-off device
- switch-type sensing device
- table-tilting device
- tactile sensing device
- take-up device
- talking technology device
- taper-turning device
- tapping device
- tensioning device
- thermoelectric device
- three-axis sensing device
- three-dimensional sensing device
- three-linear axis device
- tightening device
- tilting device
- time-cycling device
- time-delay device
- tipping device
- tool feed control device
- tool life control device
- tool storage device
- tool-changing device
- tool-checking device
- tool-guiding device
- toolholder-changing device
- toolholding device
- tool-loading device
- tool-pregaging device
- tool-presetting device
- tool-setting device
- torque release device
- tracing device
- transfer device
- trip-free mechanical switching device
- tripping device
- trueing device
- trunnion device
- tube end finishing device
- tube-cutting device
- tube-trimming device
- turnaround device
- turnover device
- twin-pallet rotating device
- two-axis sensing device
- ultrasonic proximity device
- universal machine retaining device
- variable gain device
- variable speed device
- vector-measuring device
- visible light emission device
- voice input device
- voice input/output device
- voice output device with limited vocabulary
- voice output device with unlimited vocabulary
- voice output device
- warning device
- washing device
- water suction device
- wear-sensing device
- weighting device
- wheel-trueing device
- withdrawing device
- work recognition device
- work rest device
- work transfer device
- workhandling device
- workholding device
- workpiece holddown device
- workpiece support device
- workpiece-sensing device
- work-staging device
- zero-resetting device
- zero-setting deviceEnglish-Russian dictionary of mechanical engineering and automation > device
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85 wood
[wud] 1. сущ.1) = woods лесclearing in the woods — лесная прогалина; поляна
to chop / cut wood — рубить лес
After dinner Alice slipped away for a walk in the woods with Artie. — После обеда Алиса ускользнула, чтобы прогуляться в лесу с Арти.
We proceeded slowly upwards, through woods of pine. — Мы медленно продвигались вверх через сосновый лес.
Their dishes were made of wood. — Их тарелки были сделаны из дерева.
3) дроваto gather wood — собирать дрова, собирать хворост ( для костра)
4) ( the wood) деревянные духовые инструменты5) ( the wood) винная бочка6) разг. кафедра проповедника7) деревянная часть чего-л. (например, древко копья, ручка клюшки для гольфа)9) амер.; разг. стойка в баре••to get / be out of the wood — выпутаться из затруднения; быть вне опасности
2. прил.to take in wood — амер.; разг. выпить
1) лесной2) деревянный3) древесный3. гл.1) сажать лес2) запасаться топливом, дровами3) снабжать деревянными подпорками, деревянной опорой -
86 line
1) линия; черта || проводить линию; линовать2) строка; строчка3) геом. прямая4) конвейер; технологическая линия; поточная линия5) канат; трос; мор. линь6) трубопровод || прокладывать трубопровод7) футеровка; кладка || футеровать; выкладывать8) облицовка || облицовывать9) геом. ось10) очередь, хвост11) ряд; серия; линия; партия ( изделий)12) контур; очертания13) линия (связи)15) рельсовый путь16) горн. отвес ( для направления выработок)17) короткое письмо18) соосный || располагать соосно•in line — на одной линии; совмещённый; совпадающий
in line with — в соответствии с; согласующийся с
in straight lines — мат. прямолинейно
in the line of — в направлении, по направлению, вдоль, по линии
line tangent to — геом. касательная к
no lines — телефон. все линии заняты ( служебный сигнал)
plotted as a line — мат. выраженный [представленный] линией ( о функциональной зависимости)
to line up on approach lights — авиац. выходить на огни
to produce a line — геом. построить линию
to seize a line — телефон. занимать линию
- absorption spectral line - coaxial supply line - coaxial transmission lineto take in line — полигр. вгонять строку
- cut line- die line- downstream water line- end line- line of constant rotation - line of equal probability - multischedule private line - numerical line - projective line - properly parallel lines - real number line - section line - water-oil interface line - waveguide transmission line -
87 matter
1. n вещество; материал2. n гной3. n филос. материяdead matter — неживая материя; неорганическое вещество
organized matter — живая материя, живое вещество
4. n содержание5. n сущность, предмет6. n дело, вопросbusiness matters — дела, деловые вопросы
a private matter — личное дело, личный вопрос
it is no easy matter — это дело не простое, это не просто
a matter of common knowledge — общеизвестная вещь, общеизвестный факт
a matter of great importance — очень важное дело, очень важный вопрос
a matter of life and death — вопрос жизни и смерти; жизненно важный вопрос
in all matters of education — во всём, что касается образования
7. n неприятное дело, неприятность; трудностьto mend the matter, to mend matters — помочь делу
8. n повод, причина, основание9. n собир. спец. почтовые отправления10. n юр. заявление, утверждение, требующее доказательствa matter in deed — факт, подтверждённый документально
work done without much expenditure of grey matter — работа, не требующая большого ума
11. n юр. спорный вопрос, спорный пункт; предмет спораthe root of the matter — суть дела, сущность вопроса
12. n полигр. рукопись, оригинал13. n полигр. набор; напечатанный, набранный материалit made no matter to him that his brother lost all his money — ему было безразлично, что его брат потерял все деньги
no matter! — ничего!, неважно!, всё равно!
no such matter — ничего подобного, ничуть не бывало
a matter of — что-нибудь вроде, около
no matter what — несмотря ни на что; что бы ни было
to take matters easy — не волноваться, не обращать внимания
to make matters worse he was late — более того, он ещё и опоздал
over matter — набор, не вмещающийся в установленный параметр
close matter — убористая печать, сплошной текстовой материал
reading matter — литература, материал для чтения
14. v иметь значение15. v гноитьсяthe cut got dirty and began to matter — в ранку попала грязь, и она загноилась
Синонимический ряд:1. affair (noun) affair; business; circumstance; concern; shooting match; situation; thing; undertaking2. order (noun) extent; magnitude; neighborhood; order; range; tune; vicinity3. pus (noun) infection; maturation; purulence; pus; sore; suppuration; ulceration4. subject (noun) argument; content; essence; focus; head; interest; motif; motive; point; resolution; subject; subject matter; text; theme; topic5. substance (noun) amount; being; body; burden; constituents; core; crux; element; entity; gist; individual; kernel; material; materiality; meat; medium; nub; nubbin; object; pith; purport; sense; short; strength; stuff; substance; substantiality; sum and substance; sum total; thrust; upshot6. things (noun) beings; entities; individuals; objects; substances; things7. trouble (noun) difficulty; distress; perplexity; trouble8. count (verb) be important; carry weight; count; imply; import; mean; signify; value; weigh9. discharge pus (verb) come to a head; decay; discharge pus; fester; suppurate -
88 thrust
1. n толчок2. n всовывание, засовываниеshe hid the book under the pillow with a quick thrust — быстрым движением она сунула книгу под подушку
3. n колющий удар; тычок; выпад4. n колкое замечание, колкость; выпад5. n удар6. n направление, уклон7. n пафос8. n дух; напористость9. n давлениеaxial thrust — аксиальное сжимающее усилие; осевое давление
10. n геол. горизонтальное или боковое давление, надвиг11. n горн. раздавливание12. n тех. опора, упор13. n тех. напорthrust of pump — напор, развиваемый насосом
14. n тех. осевая нагрузка15. n тех. противодавление16. n тех. ав. тяга; сила тягиto develop a 20,000 kilo thrust at take-off — развивать тягу в 20 000 кг при взлёте
17. n тех. уст. встреча, бойeach author is subjected to the cut and thrust of the discussion by other specialists — каждый автор является мишенью для критических замечаний других специалистов
18. v толкать, тыкатьthrust back — толкать обратно, заталкивать
19. v толкаться; пробиваться, лезтьto thrust at the door — толкаться в дверях, лезть в дверь
20. v навязываться, пролезать, втиратьсяthrust upon — навязывать; навязать
21. v совать; засовывать, всовывать, просовывать22. v навязыватьhe played the character parts formerly thrust upon me — он играл характерные роли, которые раньше навязывали мне
23. v наносить удар; всаживать, вколачивать, вонзать; колоть24. v делать выпад, наносить ударhome thrust — удачный удар; удар, попавший в цель, в сердце
25. v воен. двигать, вводить26. v воен. продвигатьсяan armoured battalion thrust into the southern regions — бронетанковый батальон продвинулся в южные районы
27. v воен. упирать, подпиратьСинонимический ряд:1. aim (noun) aim; intent; purport; tendency; tenor2. drift (noun) drift; intention; meaning; point3. drive (noun) butt; dig; drive; jab; lunge; plunge; prod; propulsion; push; ram; riposte; shove; stab4. substance (noun) amount; body; burden; core; crux; gist; kernel; matter; meat; nub; nubbin; pith; sense; short; strength; substance; sum and substance; sum total; upshot5. dig (verb) dig; plunge; ram; run; sink; stab; stick6. jab (verb) drive; force; gouge; impale; jab; penetrate; pierce; propel; puncture; push; shove; transfix7. pushed (verb) drove/driven; propelled; pushed; shoved8. ran (verb) drove; dug; plunged; poke; rammed; ran; ran/run; sank; sank or sunk/sunk; stabbed; stuckАнтонимический ряд:parry; pull
См. также в других словарях:
short cut — short cuts also short cut, shortcut 1) N COUNT A short cut is a quicker way of getting somewhere than the usual route. I tried to take a short cut and got lost. 2) N COUNT: oft N to n A short cut is a method of achieving something more quickly or … English dictionary
short cut — also short cut [ US ˈ. .] n 1.) a quicker and more direct way of getting somewhere than the usual one ▪ Carlos decided to take a short cut home. ▪ We were late for the game, but found a short cut through the fields. 2.) a quicker way of doing… … Dictionary of contemporary English
short cut — noun VERB + SHORT CUT ▪ be ▪ take ▪ use sth as ▪ provide (often figurative) ▪ Each saint was depicted with his or her symbols, which provided a short cut to recognition … Collocations dictionary
short cut — noun (C) 1 a quicker, more direct way of going somewhere than the usual one: We were late for the game, but found a short cut through the fields. | take a short cut: Carlos decided to take a short cut home. 2 a quicker way of doing something (+… … Longman dictionary of contemporary English
short-cut — short cutter, n. /shawrt kut /, v., short cut, short cutting. v.t. 1. to cause to be shortened by the use of a shortcut. v.i. 2. to use or take a shortcut. [1560 70] * * * … Universalium
short-cut — ˈ ̷ ̷ˌ ̷ ̷ verb Etymology: shortcut (I) transitive verb : to shorten by use of a shortcut intransitive verb : to take or use a shortcut … Useful english dictionary
short·cut — /ˈʃoɚtˌkʌt/ noun, pl cuts [count] 1 : a shorter, quicker, or easier way to get to a place Wait, I know a shortcut. Turn left here. We took a shortcut home. Let s … Useful english dictionary
cut — [c]/kʌt / (say kut) verb (cut, cutting) –verb (t) 1. to penetrate, with or as with a sharp edged instrument: he cut his finger. 2. to strike sharply, as with a whip. 3. to wound severely the feelings of. 4. to divide, with or as with a sharp… …
cut — or short cut [kut] vt. cut, cutting [ME cutten, kytten < Late OE * cyttan < Scand base seen in Swed dial., Ice kuta, to cut with a knife: the word replaced OE ceorfan (see CARVE), snithan, scieran (see SHEAR) as used in its basic senses] I… … English World dictionary
cut corners — {v. phr.} 1. To take a short way; not go to each corner. * /He cut corners going home in a hurry./ 2. To save cost or effort; manage in a thrifty way; be saving. * /John s father asked him to cut corners all he could in college./ 3. To do less… … Dictionary of American idioms
cut corners — {v. phr.} 1. To take a short way; not go to each corner. * /He cut corners going home in a hurry./ 2. To save cost or effort; manage in a thrifty way; be saving. * /John s father asked him to cut corners all he could in college./ 3. To do less… … Dictionary of American idioms