摘要：离水之鱼；在陌生环境不得其所（无所适从、很不适应）的人，如离水之鱼，感到生疏（不自在）；感觉浑身不自在

(be / feel)like a fish out of water

离水之鱼；在陌生环境不得其所（无所适从、很不适应）的人，如离水之鱼，感到生疏（不自在）；感觉浑身不自在

to feel uncomfortable because you feel you do not belong in a place or situation.

a person who feels uncomfortable or awkward because he or she is in surroundings that are not familiar

该短语还可以直接用来指“在陌生环境下不得其所的人”，也就是俗称的“社恐患者”。
例:

I think he thought of himself as a country gentleman and was like a fish out of water in Birmingham.

我想他认为自己是一名乡绅，在伯明翰就如离水之鱼一般浑身不自在。

I felt like a fish out of water in my new school.

我在新学校里感到很不适应，就像鱼儿离开了水。

Without friends and relatives in the new land, she felt like a fish out of water.

在这片新土地上她无亲无故，感到无所适从。

I knew nobody at all on my first days there and I felt like a fish out of water.

我第一天到那里时，一个人也不认识，我感到很不适应。

I feel like a fish out of water at the party because I know no one.

在这个聚会上我感到浑身不自在，因为我一个人也不认识。

I always feel like a fish out of water at parties.

参加聚会的时候，我总是感觉很不自在。

She would feel like a fish out of water, really uncomfortable, right?

她也会感觉非常不自在，非常不舒服，对吧？

With my working-class background I feel like a fish out of water among these people.

我出身于工人阶级，在这些人中感到很不自在。

I feel like a fish out of water when I meet new people.

当我结识新朋友的时候，我总感觉不太自在。

Without my phone, I feel like a fish out of water.

没有手机，我就跟离了水的鱼一样。

I feel like a fish out of water in this important meeting.

在这个重要会议上我感觉非常地紧张而无所适从。

来源：翅膀英语一点号