劍橋詞典a revolution (= one complete turn of a part in an engine ) （發(fā)動機的）一轉 Keep the revs up (= the engine parts turning quickly ) or the engine will stall . 保持發(fā)動機高速運轉，不然車就會熄火。 a rev counter 轉數(shù)計數(shù)器 也見rpm 返回 rev