v.旋開(kāi)蓋子；取下（螺絲）
The lid of this jam pot won't unscrew. 這果醬罐的蓋子擰不開(kāi)。
The officer unscrewed the cap and put the bottle to his nostrils. 那位官員擰開(kāi)了瓶蓋，把瓶子湊近鼻孔。
You'll have to unscrew the handles to paint the door. 要漆這扇門,你得把門把手上的螺絲擰開(kāi)拿下來(lái)才行。
擰下
