地球气温创400年以来最高_英语科普

地球气温创400年以来最高

文章来源：文章作者：发布时间：2006-09-19 01:22 字体： [大中小]　进入论坛

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The Earth is the hottest it has been in at least four centuries and perhaps in thousands of years, according to a new report released in U.S.

The report also claimed that human activities are responsible for it.

The National Academy of Sciences, US, reaching the conclusion in a broad review of scientific work requested by Congress, reported Wednesday that the "recent warmth is unprecedented¹ for at least the last 400 years and potentially the last several millennia²."

Scientists widely believe that emissions³ of carbon dioxide from power plants and cars that get trapped in the atmosphere are helping⁴ drive global warming.

Noteare responsible for：对...负责　　unprecedented：空前的　　
millennia：millennium的复数，millennium一千年　　emission：（光、热等的散发）
carbon dioxide：二氧化碳

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1 unprecedented
adj.无前例的，新奇的
参考例句：
The air crash caused an unprecedented number of deaths.这次空难的死亡人数是空前的。 A flood of this sort is really unprecedented.这样大的洪水真是十年九不遇。

2 millennia
n.一千年，千禧年
参考例句：
For two millennia, exogamy was a major transgression for Jews. 两千年来，异族通婚一直是犹太人的一大禁忌。 In the course of millennia, the dinosaurs died out. 在几千年的时间里，恐龙逐渐死绝了。

3 emissions
排放物( emission的名词复数 )；散发物（尤指气体）
参考例句：
Most scientists accept that climate change is linked to carbon emissions. 大多数科学家都相信气候变化与排放的含碳气体有关。 Dangerous emissions radiate from plutonium. 危险的辐射物从钚放散出来。

4 helping
n.食物的一份&adj.帮助人的，辅助的
参考例句：
The poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。 By doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。

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