But the flow from the stem tip prevents them from doing this.

VOA: special.2009.10.13

It prevents their bodies from processing alcohol the way other people do.

VOA: special.2009.06.23

It prevents the humidity in the soil from evaporating.

VOA: special.2010.07.13

In Angola,Clinton said corruption undermines peoples' faith in democracy, distorts governance and prevents people from being fully involved in their societies.

VOA: standard.2009.08.10

So it really prevents you from going low, and that's its main function."

VOA: standard.2010.04.15

Van Cleave says his group will continue its fight to repeal other gun laws, such as a measure that prevents Virginians from buying more than one handgun every 30 days.

VOA: standard.2010.07.06

"Turkey's persistent denial and inability to face, or unwillingness to face up to its history is very disruptive in all kinds of ways - in terms of international relations, in terms of its own internal politics - and it also prevents it from really recognizing how do you deal with minorities."

VOA: standard.2010.03.19