Ten years ago, in the well-known situation he began to struggle against certain forces.

But certain forces do come to the call of an ill-doer.

But there seemed to be a certain force drawing us closer all the time.

The phrase could be used both in a generic sense, or with certain specific force.

This logic has a certain force, but it also confuses cause and effect.

Although this theory has not been scientifically tested, field research gives it a certain force.

To do this, I must maintain certain fighting forces, including those who fight with physical weapons.

A stocky old boy, with a certain force, and a deal of character!

For even if certain natural forces cannot be controlled, perhaps arsonists can.

Unfortunately, due to the resistance of certain forces, we did not succeed at that point in making progress.