If that proves true, it would help thousands of people who are seeking to prevent life-threatening conditions.

VOA: special.2009.10.20

They hoped something would happen to prevent it.

VOA: special.2009.06.06

And,as I said,it would be tough for any government,any country, to prevent these kinds of attacks."

VOA: standard.2009.12.11

Bosnian Foreign Minister Sven Alkalaj said the current political crisis would not adversely impact its role on the council or prevent it from taking common positions.

VOA: standard.2009.10.15