扣帽子的英文：
put a label on sb.

参考例句：

press)a (political) label in;hurl an epithet at;Put (或pin
扣帽子

We must try to convince people through reasoning, not just put labels on them
我们要尽量做到以理服人，而不是扣帽子

His so-called criticism is in fact putting labels on people
他的那种所谓批评，实际上就是给人扣帽子

put是什么意思：
v. 放，置，使处于；表达，说明

put a crimp into
妨碍|束缚

Put on the screw
施加压力

strike [ put on ] a pose of
装出...面貌[样子]

I put it on the books.
我把它挂在账上。

The candidate was put in the other day.
这个候选人不久前当选了。

label是什么意思：
n. 标签；绰号；唱片公司
v. 贴标签于；（尤指不公正地）把...称为

Put a label on your luggage.
在你行李上做个标记。

The bottle is labeled poison.
瓶子上表明有毒。

Certain estates are labelled as undesirable.
某些物业被归入不受欢迎之列。

Please unveil the label firstly.
请先揭开标签。

This phrase is labelled as an Americanism in the dictionary.
这本词典把这个短语称为美国特有的语言现象。