In recent years, prairie farmers have sought to diversify their crops to minimize the effects of bad crop years or reductions in the price of wheat.

近年来，草原上的农民一直在努力使作物品种多样化，尽量降低小麦歉收年和价格下跌的影响。

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To take an extreme example, farmlands dominated by a single crop are so unstable that one year of bad weather or the invasion of a single pest can destroy the entire crop.

举个极端的例子，以单一作物为主的农田是如此不稳定，一年的坏天气或单一害虫的入侵可以摧毁整个作物。

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A bad bout of cold weather, a long spell of frosts could ruin a farmer's entire crop.

一场恶劣的寒冷天气和长时间的霜冻都可能会毁掉一个农民的全部收成。

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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

The larger and more important issue is whether this year's bad crop yield is an omen of what we should expect going forward.

CNN: Extreme heat and droughts -- a recipe for world food woes

Watchdog groups warn the savings may not last because the crop insurance has no caps, and in bad crop years, the cost to taxpayers could explode.

CNN: STORY HIGHLIGHTS

This dependence is a cause of some irony: in the case of soybeans, we see that the bad crop has caused distress in China, where the ubiquitous bean is the source of much of its cooking oil and is a cherished food.

FORBES: Drought, Food Shortage Cast Spotlight on Ag Innovation Showcase