Neither program is a response to a serious problem, but are rather efforts to prevent future problems, she said.

But these and other efforts to prevent violations need to be increased.

"We make a special effort to prevent it from being punitive."

Harry had the impression Black was making no effort to prevent this.

The current challenge in Federal court is an effort to prevent the state and the city from pursuing that case.

The car was changed every day in an effort to prevent easy recognition by the suspect.

The police were making no effort to prevent their activities.

We must make every effort to prevent child pornography being made available over the Internet.

We must make every effort to prevent this from happening.

France led several other European countries in an effort to prevent the invasion.