She didn't think it was wise to take sides in their argument.

　　對于他們的辯論，她覺得向著誰都不明智。

　　It was very wise to leave when you did.

　　你那時離開非常明智。

　　He made a witty comeback to the insult.

　　他對別人的侮辱給予一個機智的反駁。

　　She responded to their criticism with a witty retort.

　　她以機智的反駁回應了他們的批評。

　　He scored a bull's-eye in their argument with that witty retort.

　　在他們的辯論中他那一句機智的反駁擊中了要害。