He is a serious boy.

他是个严肃的孩子。

youdao

He is a play boy, and make advance to many girls but never serious.

他到处玩弄感情，从没对哪个女孩子认真过。

youdao

He is a play boy, and make advance to many girls but never serious.

他到处玩弄感情，从没对哪个女孩子认真过。

youdao