n. a tense critical situation
n. a number of birds hatched at the same time
n. a pedal or lever that engages or disengages a rotating shaft and a driving mechanism
n. a coupling that connects or disconnects driving and driven parts of a driving mechanism
n. 抓紧, 掌握, 离合器, 一窝小鸡
vt. 抓住, 踩汽车离合器踏板
vi. 抓
[计] 联轴器; 离合器