Because the cap is on the surface, he said, it would not prevent chemicals in the ground water from traveling to the landfill.

A husband can prevent his wife from traveling abroad, and the police will back up his legal right to stop her.

But until quite recently, political conditions prevented him from traveling to the country whose music had inspired him four decades earlier.

However, his identity papers were confiscated, preventing him from traveling.

The police took the highly unusual step of preventing many buses from traveling to the demonstration.

There is little chance of preventing this creature from traveling between colonies.

He could also prevent others from traveling between dimensions.

"This is to prevent the terrorists from traveling through Gaza," the spokeswoman said.

But don't let the convenience prevent you from traveling elsewhere.

"These criminal gangs will not be able to prevent people from traveling and moving."