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1 трудно
•Bubbles of gas have great difficulty in getting out of the magma.
•Driving forces are difficult (or hard) to measure accurately.
•Such suspended droplets are hard to remove from the gas stream.
•Even experienced economists may be hard pressed to guess the impact of new sources of a chemical.
Русско-английский научно-технический словарь переводчика > трудно
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