一本正经

She always give clients an impression of humourless prude.

(不苟言笑，正印象)。

Don't you be so fucking formal with me.

别你他妈对我这正了。

Lawyer Utterson is a non-talky and nannyish people.

律师厄特森先生是个不爱话、正人。

I don't like proper children.

我不喜欢正子。