成人英语三级

[1]Are these events connected? Looking only at individual extreme events will not reveal their cause, just like watching a few scenes from a movie does not reveal the plot. But, viewed in a broader context, and using the logic of physics, important parts of the plot can be understood.

这些事件彼此关联吗?仅仅把注意力放在个别极端天气事件上是不能揭示其成因的，这就跟观看一部电影中的几个场面不能展现出其整个故事情节是同样的道理。只有放在更宏观的情境中，并使用物理学的逻辑去观察，情节中的重要部分才能够明了。

[2]All weather is driven by energy, and the sun ultimately provides this energy. But the biggest change in Earth's energy budget by far over the past hundred years is due to the accumulation in our atmosphere of greenhouse gases, which limit the exit of heat into space. Owing to fossil-fuel emissions, there is now one-third more carbon dioxide in the atmosphere than at any time in at least a million years, as the latest ice drilling in Antarctica has revealed.

所有的天气都是由能量驱动的，而这种能量最终都来自太阳。但100年来地球能量“预算”的最大变化是由于大气中温室气体的积累，由此限制了热量向外层空间的释放。最近对南极地区冰层的钻探表明，由于化石燃料的排放，目前大气中的二氧化碳含量比过去至少100万年中的任何时期都高1/3以上。

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（责任编辑：昆凌）

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