Money can corrupt any line of business, but it doesn't have to.

金钱可以腐蚀任何行业，但事实并非一定如此。

WHAT line of business are you in?

你处于哪个行业？

Fortunately, a new line of business has emerged.

幸运的是，一种新的商业形式开始出现。

Oh, I am interested in your new line of business.

噢，我对贵方经营的新品种颇感兴趣。

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

我经营这项业务已有多年。