那把刀子被卡住了,她猛地一拔,把它拔了出来.The knife was stuck but she pulled it out with a jerk.纸被卡住,导致它出现故障.The paper got jammed and it broke down.当阀门热关闭并冷却后不会被卡住.Will not stick when valve is closed hot and allowed to cool....