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strain; exert | |||
tighten (impf of натужить); tense (impf of натужить) | |||
tense; stretch | |||
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strain oneself (impf of натужиться); make an effort (impf of натужиться); exert oneself (impf of натужиться) | |||
make a supreme effort; bear down; exert oneself; make an effort |