Of course that's how you got yourself into this in the first place, by having the guts to try some new substance.

A new substance and vitality have taken hold in the county.

Two methods are used to create new substances in tobacco.

"But that's not the most wonderful feature of the new substance."

The chemist may try to make the new substance by other routes.

Three new substances had been found that could cause cancer.

They use this new substance to start a war that is fought throughout the solar system.

He has been very successful with his work on new pharmaceutical substances.

We agree that a mechanism to ban new substances should be set up.

He has a new substance which has just been developed.