It shows that the risk of fisheries collapse has recently decreased in some areas,but not all.

VOA: special.2009.09.08

Every risk management device relies on a design and the design is usually complex and has-- it all has to work together.

每种风险管理工具都是基于某种设计,而这种设计通常都是很复杂的,需要各部分相互之间的配合

耶鲁公开课 - 金融市场课程节选

I mean, you certainly could make a fortune buying them I mean, I'm certainly not telling you it's not going to work, but I think it's all risk-reward.

我的意思是，你很可能会通过它们赚很多钱,我是说，我肯定不会告诉你说,那一点也行不通，但我觉得高风险才有高回报。

耶鲁公开课 - 金融市场课程节选

It also said more than one third of all countries at risk of malaria reported a drop in cases of more than fifty percent.

VOA: special.2010.04.20

"Whenever a country imposes rules on business that hurts the business that makes it less appealing to consumers, there's a risk that,first of all, the businesses that do operate in the country will suffer.

VOA: standard.2010.08.02