例句：
He gets commission on top of his salary.
他除了薪金之外還拿佣金。
He was sound asleep on top of the covers.
他在牀單上睡得很香。
Do you think he's really on top of his job?
你認爲他真的能做好他的工作嗎？
例句：
He gets commission on top of his salary.
他除了薪金之外還拿佣金。
He was sound asleep on top of the covers.
他在牀單上睡得很香。
Do you think he's really on top of his job?
你認爲他真的能做好他的工作嗎？
