英语笔译实务-3级配套训练-第十四单元--英译汉(一)Ancient-Global-Warming-Was-Sudden--Not-Subtle
笔译实务 3级配套训练 第十四单元 英译汉（一）
英语笔译实务 3级配套训练 第十四单元 英译汉（一）
Ancient Global Warming Was Sudden, Not Subtle
Foreshadowing potential climate chaos to come, early global warming caused unexpectedly severe temperature swings as rising levels of greenhouse gases helped transform Earth, a team lead by researchers at UC Davis said Thursday.
The global transition from ice age to greenhouse 300 million years ago was marked by repeated dips and rises in the amount of carbon dioxide in the atmosphere and wild swings in temperature, with drastic effects on forests and vegetation, the researchers reported in the journal Science.
“It was a real yo-yo,” said UC Davis geochemist Isabel Montanez. “Should we expect similar but faster climate behavior in the future? One has to question whether that is where we are headed.”
The provocative insight into planetary climate change counters the traditional view that global warming could be gradual and its regional effects easily anticipated.
Over several million years, carbon dioxide in the ancient atmosphere increased from about 280 parts per million to 2,000 ppm, the same increase that experts expect by the end of this century as remaining reserve of fossil
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笔译实务 3级配套训练 第十四单元 英译汉（一）
fuel are burned.
No one knows the reason for so much variation in carbon dioxide levels 300 million years ago, but as modern industrial activity continues to pump greenhouse gases into the air at rapid rates, the unpredictable climate changes that took millions of years to unfold naturally could be compressed into a few centuries or less today, several experts said.
Still, the transformation of ancient earth documented by Montanez and her colleagues makes the current spate of extreme weather events – extended droughts, heat waves, and powerful hurricane seasons – appear mild by comparison.
?? 课文词汇 foreshadow yo-yo
预示 悠悠球
chaos geochemist
混乱 地球化学家
UC Davis
(University of California, Davis) Isabel Montanez fossil fuel hurricane
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戴维斯加利福尼亚大学
伊莎贝尔·蒙塔内斯 spate of
一连串
化石燃料 强风暴
笔译实务 3级配套训练 第十四单元 英译汉（一）
?? 参考译文
远古时代的全球变暖过程是突变而非渐变
戴维斯加利福尼亚大学研究人员领导的一个研究小组周四说，早期全球变暖预示着可能出现气候混乱，早期全球变暖引起了气温巨变，这是人们始料未及的，同时温室气体的增加促使地球发生变化。
研究人员在《科学》杂志上发表报告说，三亿年前地球从冰川期向温室期的那次转变以大气层中二氧化碳含量的反复升降和气温的剧烈变化为特征，极大地影响了森林和植被。
戴维斯加利福尼亚大学的地球化学家伊莎贝尔·蒙塔斯说：“这简直就像悠悠球。未来也会出现同样的但更加迅速的气候变化吗？人们不得不问，这是我们的归宿吗？”
这一有关地球气候变化的争议性见解与传统观点背道而驰，后者认为全球变暖可能是一个缓慢的过程，很容易预测其对各地区的影响。
远古大气层中的二氧化碳含量在数百年间从280ppm增加到2000ppm。专家预测，随着现有化石燃料的燃烧，到本世纪末二氧化碳量也会增加到这种程度。
有专家说，没有人知道为什么二氧化碳含量在三亿年前就有那么大的变化，但现代工业活动迅速将温室气体不断排入空气中，过去耗时数亿年自然形成的这种无法预测的气候变化，如今可能在几个世纪甚至更短的时间内就会发生。
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笔译实务 3级配套训练 第十四单元 英译汉（一）
与蒙塔内斯和同事所记录的远古时代地球气候变迁相比，现今众多的极端气候现象（如久旱，热浪和强风暴季节）则显得相对温和。
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英语笔译实务-3级配套训练-第十四单元--英译汉(一)Ancient-Global-Warming-Was-Sudden--Not-Subtle
