Many of the past crop production practices have resulted in environmental problems.

过去的许多耕作措施导致了很多环境问题。

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FOR the past decade maize has been the seed companies' favoured crop.

在过去的十年里玉米是种子公司比较受欢迎的作物。

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Questions like this crop up frequently -where do things from the past belong now?

诸如此类的问题频繁出现：历史文物现在究竟属于哪里？

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Record high temperatures are occurring with far greater frequency than in decades past, and crop yields decline sharply in extreme heat.

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

Short interest on the shares rose by 5.9% over the past month, as a new crop of skeptics placed their bets against AMZN.

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Here, then, is a retrospective look at some of the scariest side effects to crop up over the past 12 months--from rare events like liver failure or brain-wasting diseases to more common ones such as heart attacks or strokes.

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