正经的

She always give clients an impression of humourless prude.

(不苟言笑，一本正经的印象)。

Joking apart, you ought to smoke fewer cigarettes, you know.

正经的, 你应该少吸点烟, 知道吗?

Lawyer Utterson is a non-talky and nannyish people.

律师厄特森先是个不爱话、一本正经的人。

I don't like proper children.

我不喜欢一本正经的孩子。