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单词 ozone hole
释义 ozone holeBrE /ˈəʊzəʊn həʊl/ NAmE /ˈoʊzoʊn hoʊl/ noun an area in the ozone layer where the amount of has been very much reduced so that harmful ozone has been very much reduced so that harmful radiationfrom the sun can pass through it 臭氧洞
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