The trouble with the American system of environmental regulation, he finds, is that it tries to control rather than prevent pollution.

Senior officials from both countries are trying to negotiate a compromise and prevent a trade war.

The government sent emergency legislation to Congress to try to guarantee bank deposits and prevent a run on savings.

He grunted, trying to force the blood back up to his brain and prevent a gray-out.

It would help if he actually tried to jump rather than prevent his opponent from doing so.

Steps have been taken to try to limit or prevent future escape attempts from the state's mental health institutions.

Danish firms tried to protect the coast and prevent sand erosion,.

"We're trying to anticipate and prevent other things that could jeopardize the success of the mission."

"We are trying to close ranks and prevent the enemy from having a field day."

"We're trying to tell the truth and prevent what is a serious situation from becoming catastrophic."