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【英语时差8,16】全球变暖1

时间:2015-10-28 05:52来源:互联网 提供网友:yajing   字体: [ ]
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    (单词翻译:双击或拖选)

 Ya?l: Today on A Moment of Science, global warming . . .

D: Uhm, right . . .
Y: That's your cue1, Don.
D: I know, Ya?l . . . but . . .
Y: What's wrong?
D: Well, we're a science program, right? And I know that the accepted scientific wisdom is that human activity is causing the Earth to get warmer. But I can't help but think that the melting of polar ice and everything else we're seeing is at least partly caused by natural warming. I mean, weather patterns do change naturally over time.
Y: Of course. And we know that the earth was going through heating and cooling cycles long before people started pumping carbon dioxide into the atmosphere. And, in fact, scientists have observed a strange weather pattern over the past twenty or so years. Normally, cold winds from the Arctic2 blow south. But during the past few decades, warmer air and clouds from the south have blown north toward the Arctic. All that warm air is a big reason why so much Arctic ice has melted.
D: But warming caused by human activity still plays a role, right?
Y: A big role. Natural warming combined with man-made warming has melted so much Arctic ice that it's created a sort of feedback loop. Snow and ice reflect sunlight. But the darker ocean water absorbs light and heat, causing even more ice to melt.
D: So natural warming or man-made warming in isolation3 would cause some ice to melt...
Y: But not nearly as much as the two forces combined. That's what's really put us where we are today. 

点击收听单词发音收听单词发音  

1 cue Nn3zp     
n.暗示,信号,提示;vt.提示,暗示
参考例句:
  • When she coughs,it's my cue to come onto the stage.她一咳嗽,就是给我暗号出场。
  • The actor missed his cue and came onto the stage late.这演员错过了向他发出的提示,上场晚了。
2 Arctic czLzw     
adj.北极的;n.北极
参考例句:
  • They flew over the unlimited reaches of the Arctic.他们飞过了茫茫无边的北极上空。
  • The sort of animal lived in the Arctic Circle.这种动物生活在北极圈里。
3 isolation 7qMzTS     
n.隔离,孤立,分解,分离
参考例句:
  • The millionaire lived in complete isolation from the outside world.这位富翁过着与世隔绝的生活。
  • He retired and lived in relative isolation.他退休后,生活比较孤寂。
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