Some of the increase can be blamed on the shift of crops from food to fuel, prompted by wildly inefficient subsidies.

某些价格的上扬可以归咎于在离谱的低效补贴的刺激下，某些国家将原本是食物的农作物当作燃料来使用。

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Distraction, says Mischel, is actually a perfectly respectable away of exerting willpower. You simply shift your attention away whenever temptation crops up.

其实分散注意力是一种很好的方法，无论诱惑何时出现，你只要转移注意力就行了。

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With hundreds of farmers not planting traditional food crops this season, Nkansah believes there is a real risk that the shift to biofuels will result in food shortages.

VOA: standard.2009.08.23

From 1996 to 2010, the shift to biotech crops reduced carbon emissions by 19.4 billion kilograms, the equivalent of removing 8.6 million cars from the road for a year.

FORBES: The New York Times' Mark Bittman Offers Poisoned Food For Thought

Great swathes of farmland in northern China devoted to growing wheat will over time shift to high-value crops, such as vegetables and fruit.

ECONOMIST: The real leap forward