一本正经

Lawyer Utterson is a non-talky and nannyish people.

律师厄特森先生是个爱说话、一本正经。

She always give clients an impression of humourless prude.

(言笑，一本正经印象)。

Don't you be so fucking formal with me.

别你他妈对这么一本正经了。

I don't like proper children.

喜欢一本正经。