【英语时差8，16】全球变暖1
时间：2019-02-23 作者：英语课 分类：英语时差8，16
英语课
Ya?l: Today on A Moment of Science, global warming . . .
D: Uhm, right . . .
Y: That's your cue 1, 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 Arctic 2 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 isolation 3 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.
n.暗示，信号，提示；vt.提示，暗示
- 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。
adj.北极的；n.北极
- 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。