droop与dip的区别是什么？

droop vi.
(头、树枝等)下垂; (眼睛)朝下
(草木)枯萎; (人)憔悴; (精神)萎靡; (意气)消沉; 精力丧失
[诗](太阳等)落山, 西沉

Her head drooped sadly.
她的头悲哀地垂下来。
Don't let your spirits droop.
不要萎靡不振。

dip vt.
(dipped; dipping)
浸; 泡; 蘸; 染
把(旗等) 降下又升起; (汽车)打近灯
汲出, 舀取
(把烛芯置于融蜡中)制造(蜡烛)
【宗】为 ...... 施浸礼
(把猪羊等放在杀虫液里)浸洗(以治疥疮)
[常用被动语态][口]使限入经济困难, 使欠债
[美俚]扒窃

dip a pen in the ink
用钢笔沾墨水
dip one's head into water
把头潜入水中
dip the flag (in salute)
(向另一船)行点旗礼
dip out (up) water with a ladle
用勺舀水
She was dipped as badly as her father.
她的经济状况跟她父亲一样困难。

droop垂下，颓丧，枯萎，垂头丧气，朝下
dip浸一下，浸，掏出，驰度