What line of business is he in?

他是从事那一行的？

We specialize in this line of business.

我们专门经营此项服务.

Does this item come under your line of business?

我想知道这种产品属您经营的范围吗?。

Our firm is specialized in this line of business;

我们公司专营这项业务，有六个推销员长年在外；

Involving line-of-business (LOB) objectives and IT objectives.

包括业务部门 (LOB)目标和IT目标。

I have been in this line of business for many years.

我经营这项业务已有多年.

We have been in this line of business for many years.

我们经营这项业务已有多年.

You meet some very interesting people in my line of business.

干我们这行,你会遇到很多有趣的人.

The solar energy that start line of business is a representative sample.

兴业太阳能就是一个典型的样本.

Voice Search has become the search giant to force a new line of business.

语音搜索已经成为搜索巨头们发力的一个新业务.