jerk

n. (口语)笨蛋,性情古怪的人,急拉,肌肉抽搐
v. 痉挛,急拉,急推,急动

The knife was stuck but she pulled it out with a jerk.

那把刀子被卡住了，她猛地一拔，把它拔了出来。

The bus jerked to a stop.

公共汽车猛然刹车停住了。