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| Related Keyword：臭氧 , 北極 |
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| 環境危機北極首次出現臭氧破洞 ＠ 2011-10-03T18: |
| 〔本報訊〕外電報導，北極臭氧層逐漸稀薄，今年惡化情況更上高峰，科學家指出，今年是首次出現北極臭氧層破洞，惡化速度令人擔憂。 外電指出，距離北極第13公里處，有將近80％的臭氧散失，形成如南極般的臭氧層破洞。面對這樣的環境危機，科學家分析，形成北極臭氧成破洞 |
| Keyword：臭氧 北極 |
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