机（机器） machine; engine:缝纫机 sewing machine内燃机 internal-combustion engine挖泥机 dredging machine（飞机） aircraft; aeroplane; plane:客机 passenger plane运输机 transport plane; airfreighter（事情变化的关键; 有重要关系的环节） crucial point; pivot; key link:转机 a turning point; a turn for the better（机会） chance; occasion; opportunity:趁机 take advantage of the occasion; seize the opportunity (chance)见机行事 do as one sees fit; use one's discretion随机应变 adapt oneself to changing conditions; act according to circumstances（生活机能） organic:无机化学 inorganic chemistry有机体 organism
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