【俚語】

Bite one's lip
忍住沒說；抑制情感流露

【例句】

I really wanted to laugh - But I had to bite my lip.
我真的想笑——但只能忍住。

Bite off more than you can chew
承擔力所不及的事，吃多嚼不爛

【例句】

He has promised to get all this work finished by the weekend. And I think he’s biting off more than he can chew.
他承諾在周末前完成所有工作。我感覺他這是吃多嚼不爛。

sb/sth won't bite 不用害怕

【例句】

This is your Uncle Jack, son. Go and shake his hand, he won't bite.
這是你的杰克叔叔，兒子。去和他握手，不用害怕。

Have/grab a bite 隨便吃一些

【例句】

Let's have a bite before we get on the road.
我們上路前先隨便吃點東西吧。

Bite one's head off
向某人怒吼/發火

【例句】

What's wrong with the boss today? I just tried to ask him a question, and he totally bit my head off!
老板今天怎么了？我只是想問他一個問題，但他是那么生氣！