例句：

　　我留了口信，但他沒有回電話。

　　I left a message but he didn't return my call.

　　她沒給他回電話，這使他有些不安。

　　It niggled him that she had not phoned back.

　　在方便的時候我會回電話的。

　　I'll call back at a more convenient time.