When corn came to Europe from Mexico, now they had a much hardier crop that could be grown easily in more northerly climates and the centers of power began to shift accordingly.

当玉米从墨西哥传到欧洲的时候，他们有了一种更耐寒的作物，更容易在更偏北的气候条件下种植，权力的中心也随之转移。

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That in itself marks a shift in official Brazilian thinking; only two years ago did it drop the idea that any incentive to avoid deforestation could infringe its sovereignty.

这本身也标志着巴西官方思维的一个转变；因为直到两年前巴西才抛弃那种认为防止森林砍伐会危及它的主权的想法。

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However, the credit crunch could prompt a shift in that strategy.

然而，信贷紧缩可能改变这一部署。

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Airbnb had great timing and fast-moving founders but benefited equally from a sea change over the past five years in consumer attitudes about ownership, a shift that could prove to be the longest-lasting legacy of the Great Recession.

FORBES: Airbnb And The Unstoppable Rise Of The Share Economy

But beneath the increased growth is a seismic shift that could hurt branded and generic drug makers alike.

FORBES: The Age Of Commodity Medicines Approaches

It is possible that iPad phenom will play a part in the process that could see a substantial traffic shift towards the iMessage platform.

FORBES: The Apple-WhatsApp Messaging Juggernaut