The problem was to find a means to prevent their entrance into the body of the victim.

You hold the key to preventing a slide into that long, terrible night.

This policy was to prevent student migration into the larger cities.

Moreover many lost faith in Britain's ability, under any government, to prevent the slide into war.

Both times, the Union unsuccessfully tried to prevent his entrance into the plant.

It might also prevent the movement of some viruses into cells.

Even then production difficulties prevented its introduction into service until 1907.

We must also prevent the illegal conversion of land into building sites.

The report also looks at the barriers that prevent involvement in society and integration into the job market.

This is to prevent the possible introduction of a pregnant female into the environment.