出差的英文：
be away on business

参考例句：

Copy your aunt and you won't go wrong.
效仿你阿姨，你就不会出差错了。

A stainless steel vacuum thermos cup, a good companion on business trips, frees you from inconvenience.
真空不锈钢保温杯，出差良伴，有杯无患。

If I hadn’t been away on business, I should have been save her
假使我当时不出差，我本来是会见到她的

Hi, Lin Xu. Our old fellow Xiao Fei has come to Shanghai on a business trip. He is staying in Hongqiao Rainbow Hotel.
你好，林旭，我们的好朋友小飞因公出差到上海来了，现在在虹桥宾馆。

The super will be on business next month.
监工下个月要出差。

He has gone on a business trip.
他出差去了。

I'm here on Business.
我来这里出差

I flew to Tokyo on business.
我飞往东京出差。

I'm sorry, Mr. Wang is away on a business trip.
抱歉!王先生出差去了。

Is this business trip obligatory?
这次出差是不是规定的?

away是什么意思：
adv. 在远处；离开，远离；消失

to kick away; to spurn away
一脚踢开

to die away; to fade away; to vanish; to elapse; to wear away
消逝

She barked the boy away.
她把那男孩喝走了。

give away; make a present of
赠送

Collins frowned and looked away.
柯林斯皱了皱眉头，又往别处看去。

business是什么意思：
n. 商业，交易，生意；公司，商店；事情；职责

Be engaged in; be Busy in
从事于

to sit for business
因公滞留

As Busy as a bee
(象蜜蜂)忙忙碌碌的

Monkey Business
耍些骗人的把戏、捣鬼

depressed business
不景气的生意