As a physician, nutrition is one of the most powerful things you can change to reverse the effects of long-term disease.

作为一名医生，营养是你能改变的最强大的东西之一，可以逆转长期疾病的影响。

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Their yawning seems to have nothing to do with sleepiness or boredom—quite the reverse—but it does precede a change in activity level.

他们打哈欠似乎与困倦或者无聊没有任何关系，但恰恰相反，打哈欠这一行为的确出现在了活动水平的变化之前。

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The group's mission is simple, if grandiose: to reforest the land with a variety of the most interesting tree species from around the world, and by extension, halt and reverse climate change.

该组织定下的研究目标既简单又宏大：让那些来自世界各地且最有意思的树种在大地上汇聚成林，进而阻止并逆转气候变化。

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For banks, what's been concluded is the equivalent of a climate-change deal: an attempt to reverse potentially lethal global warming in the financial sector.

BBC: Why have we left bank reform to technocrats?

"Tesco's exit from the US is a reminder for managers of the dangers of going blindly for scale and cost leaders, the wheels of which are difficult to reverse if you need to change course to becoming a retailer known for first-class customer experience, " Prof Bhalla said.

BBC: Tesco profits fall as supermarket pulls out of US

He said Facebook is likely banking on the notion that many users won't bother to reverse the change to their displayed email, thereby leaving a Facebook address in place.

WSJ: Facebook's Email Change Riles Users