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英语时差:创造臭氧层-上

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2021年10月14日

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https://online2.tingclass.net/lesson/shi0529/10000/10183/1017.mp3
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 We’re always hearing that the ozone layer is being depleted, and how bad this is because we need it to protect us from the sun’s harmful ultraviolet rays. But I’ve been thinking, and there has to be a more effective way to restore the ozone layer than by sitting around not releasing any more harmful chemicals into the air so the ozone has a chance to repair itself. Ok, like what? Well,how hard could it be to make more ozon? We must have plenty of raw material. After all the ozone molecule contains three oxygen atoms–and the oxygen molecules we breathe contain two oxygen atoms, so can’t we just use that oxygen to produce a bunch of ozone ourselves and stick it back up in the atmosphere?

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