weed out (get rid of, select) 挑选

【讲解】

weed常做名词，本义为“杂草”，当与out连用时，则变成了动词，就是“拔除”的意思，相当于get rid of，但是从另外一个角度来看，则带有“挑选”的意思，相当于select。

【对话】

A:You should weed out good guys from the had when making friends in school.

A:在学校交朋友的时候，你应该从坏孩子中挑出那些好孩子来。

B:But I can't tell the difference between them.

B:但是我分不清哪些是好人，哪些是坏人。

A:It must take you some time to know a person well. But you should remember a friend in need is a friend indeed.

A:要了解一个人的为人是要花时间的，但你必须记住患难朋友才是真正的朋友。