你可以笑，不过我可是正经八百的。

You may laugh but I'm in deadly earnest.

《牛津词典》

而是正经八百的再说这庄子事儿。

But serious if the say thing that Chuang Tzu.

youdao

看看每个人！突然间都变得正经八百了。

Look at everybody! All of a sudden they are trying to look respectable.

youdao

看看每个人！突然间都变得正经八百了。

Look at everybody! All of a sudden they are trying to look respectable.

youdao