Even if emissions were to begin to decrease today, we would still face the challenge of adapting to climate change.

即使今天排放量开始减少，我们仍然面临着适应气候变化的挑战。

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Climate change is a grave challenge to mankind and calls for a concerted international response.

气候变化是全人类面临的重大挑战，需要国际社会合力应对。

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Climate change is also set to challenge scientists' methods for studying toxicity.

全球气候变化同样对科学家研究毒性的传统方法发出了挑战。

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Unless carbon emissions are brought under control,he says, the challenge of adapting to global climate change will become ever more difficult.

VOA: standard.2010.06.14

He said this meant the UK had "not only to prepare and adapt to the challenge that climate change is going to bring us but also to do everything we possibly can here in this country to combat the causes of climate change in the first place".

BBC: Lawson accused of 'profound' error on climate change

And since this region includes some of the fastest-growing nations, there can be no solution to the challenge of climate change without the cooperation of the Asia Pacific.

WHITEHOUSE: Weekly Address: Traveling Abroad for Our Economy at Home

Here, negotiators from some 190 countries must strike a new global deal to tackle the challenge of climate change.

UNESCO: Communication and Information