You learn to have a feeling for the people in your own line of business.

You being in the same line of business as me.

The company moved into other lines of business in 2003.

To be sure, both companies have other lines of business.

The project opened up far more than a new line of business.

I didn't think it would be too long before he'd have another job for a good man in that line of business.

You learn not to trust people in our line of business.

Probably guys in his line of business get that idea rather easily.

I'm in your line of business, ten years back, I should think.

It stands to reason you know the other people in your line of business.