Until we know any different, everyone's a potential source of help.

But he hadn't, and their best potential source of information was dead.

We are nothing but a potential source of income to them.

But if not, she remains our best potential source of information.

Just one year earlier, however, someone had discovered a potential source of heat.

As a result, there are not one but at least three potential sources of opposition.

Each knew that the other was a potential source of danger.

There are several potential sources and causes of back pain.

The lower back is a complex spot, with many potential sources of pain.

"We must follow up every potential source of black crystal."