Stop grinning! This is a serious matter.

别傻笑了！这可是件很严重的事情。

youdao

Stop grinning! This is a serious matter.

请严肃点儿，这事很重要。

youdao

I wish you'd stop grinning like a Cheshire cat and try to be serious.

我希望你不要再傻笑了，要认真严肃些。

youdao

I wish you'd stop grinning like a Cheshire cat and try to be serious.

我希望你不要再傻笑了，要认真严肃些。

youdao