Most use other substances as well, so it is important to be able to intervene for a variety of problems.

It enabled the state to intervene, for the first time, in relations between parents and children.

We can intervene with the local judicial system, make it easy for you.

Already the speaker has had to intervene and call for order.

Yet he's made no effort whatsoever to intervene for at least one very good reason.

The protesters were expecting Americans to intervene for their side.

But his other work again intervened, for a further 25 years.

I don't want him to see how you intervene for me.

Obviously Hitler himself would have to intervene personally for that.

President Clinton has decided not to intervene for the moment.