"How do you make sure you are designing a system where you are going to constrain risk taking, you can prevent crises from spreading,and -- if a major institution managed itself to the edge of the abyss -- that we are able to put them out of their misery."

VOA: special.2010.04.16

Similarly,I believe that if we wish to prevent drug abuse in teenagers who grow up in a neighborhood that puts them at risk, the effective prevention is not remedial.

同样，如果我们要防止,青少年受不良的社会环境影响,而滥用药物的情况，但预防的效果不佳。

哈佛公开课 - 幸福课课程节选

Nobody knows how bad the mortgage crisis is going to get but Ben Bernanke thinks that it's so important that we prevent a collapse that we should take that risk.

没有人知道抵押危机,到底会有多坏的影响，但是本？伯南克认为,预防承担那个风险所带来的暴跌,是非常重要的。

耶鲁公开课 - 金融市场课程节选

"They were willing to risk their lives, in this case, to prevent Afghanistan from once again becoming a safe haven for al-Qaida and its extremist allies.

VOA: standard.2009.10.26

He says he signed it to try and prevent further disintegration of the country's infrastructure and was prepared to take the political risk to try and move Zimbabwe forward.

VOA: standard.2009.09.15

The president says the bill will subject large and small banks to tougher oversight, and prevent banks from taking so much risk they could collapse and threaten the economy.

VOA: standard.2010.05.15

"The Kremlin are very aware of the risk that this might theoretically evolve as something bigger so they try to pre-empt, try to prevent, such kind of undesired evolution before it begins to happen."

VOA: standard.2010.05.19

UNICEF is working with Guinea Bissau's Ministry of Women and Family to better protect young girls at risk and increase the supply of drugs that prevent mother-to-child transmission of HIV while expanding the availability of those drugs outside the capital.

VOA: standard.2009.04.24