At times, he worked to prevent important art from leaving Britain.

If they come upon his body, here, they'll bring in troops to prevent anyone from leaving the area.

What would prevent you from leaving a written*record of anything I say?

For one thing this would prevent people from leaving their desks to find a more private area where they can light up.

And there was no way he could prevent it from leaving him!

Citizens must be kept happy to prevent them from leaving the town.

At the bus stop, the authorities prevent her from leaving.

"It's not as if we have anything that could prevent them from leaving."

"We can prevent any living thing from leaving this ship," she said.

At the same time she handed off a man who was trying to prevent her from leaving.