While our manager is away on business, our company will be in the charge of Mr. Zhang.

经理外出出差的时候 我们公司的业务将由张先生负责

I have to go to Rome on business.

我得去罗马出差。

I presume you're here on business.

我想你是来这儿出差的吧。

He's away on business.

他出差去了。

I'm here on business.

我在这里出差。

I may be away on business next week but at any rate I'll be back by Friday.

我下周可能要出差，但无论如何，我最晚星期五回来。