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(单词翻译)
No. No? No, we can't manufacture enough ozon to replenish the ozon hole. why not? Several reasons, for one thing, ozone1 in large quantities is extremely hazardous2 and volatile3, which makes it hard to work with, to say the least. Also, the ozone layer is immense–there’s roughly twenty billion tons of it–and we’d have no way of handling such large quantities. Plus, the ozone layer requires a huge amount of energy to maintain itself, which right now it gets from the sun. Taking over natural ozone production would require more than double the energy the United States produces annually4. And that’s why the only way we know to fight ozone depletion5 is by cleaning up our act and giving nature the chance to take its course.
收听单词发音
1
ozone
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| n.臭氧,新鲜空气 | |
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2
hazardous
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| adj.(有)危险的,冒险的;碰运气的 | |
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3
volatile
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| adj.反复无常的,挥发性的,稍纵即逝的,脾气火爆的;n.挥发性物质 | |
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4
annually
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| adv.一年一次,每年 | |
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5
depletion
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| n.耗尽,枯竭 | |
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