But on the other hand, there is a certain risk.

A the moment it is in most cases just about possible to say that, according to a family history, a certain risk exists.

"In time of war one has to take certain risks," he said.

We have to take certain risks in this life, and that's just one of them.

"There are certain risks I don't want to put on the public," he said.

"One cannot go through life without attracting certain risks if they are necessary."

With cars, there's a certain accepted risk that at least 42,000 Americans are going to die every year.

"I think we must run a certain risk in the eyes of the world."

That represented a certain personal risk for him, of course.

But I had to be careful about getting my control box melted too, so a certain risk was necessary.