Economists blamed the crisis on different causes, including high energy costs, bad weather and the use of food-crop lands for biofuel production.

VOA: special.2010.03.23

There are some very poor areas in Africa where farmers really run the risk-- if their crop fails it could be really bad; they would be approaching starvation.

在非洲有一些非常贫困的地区,那里的农民真的面临着巨大的风险,一旦庄稼歉收 他们的处境将变得很糟糕,他们将经历饥荒

耶鲁公开课 - 金融市场课程节选