A report from IPCC, the UN's climate science body, showed that if global temperatures rise more than 1.5℃ by the end of the century, poor countries will likely face very serious challenges, including the disappearance of whole communities and millions of early deaths.

联合国政府间气候变化专门委员会的一份报告显示，如果到本世纪末全球气温上升超过1.5℃，贫穷国家将可能面临非常严峻的挑战，包括整个社区的消失和数百万人的过早死亡。

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I seek the sharp, scary pleasure that comes from beginning something new - that calls on all my resources and challenges my mind, my body, and my spirit, all at once.

我寻觅来自于尝试新生事物的敏锐而慌乱的快乐，这样能调动我全部的资源并挑战我的头脑、身体和精神，全都一蹴而就。

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The Victim. “But you don’t understand my life, body, time restraints, problems, situation, history, challenges, injuries, medical conditions.”

牺牲者会说，“但是你不理解我的生活，身体，时间限制，问题，解决办法，历史，挑战，伤害以及药物情况。”

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And challenges for the body.

FORBES: Magazine Article

Several recent studies have come to an identical conclusion, including the High-Level Panel on Threats, Challenges and Change, a body set up by Mr Annan himself.

ECONOMIST: The United Nations

And all these changes, all these challenges, inevitably cause some tension in the body politic.

WHITEHOUSE: President Obama at Michigan Commencement