1.a fish out of water
离水之鱼;在陌生环境不得其所的人
a person who feels uncomfortable or awkward because he or she is in surroundings that are not familiar
2.have bigger/other fish to fry
还有更重要的事情要做;另有他图
to have more important or more interesting things to do
3.neither fish nor fowl
非驴非马;不伦不类
neither one thing nor another
4.an odd/a queer fish
(old-fashioned, BrE) 古怪的人;有些荒唐的人
a person who is slightly strange or crazy
5.there are plenty more fish in the sea
海里的鱼有的是;还有很多一样好的(人或事物)
there are many other people or things that are as good as the one sb has failed to get
6.a big fish (in a small pond)
(小圈子里的)大人物
an important person (in a small community)