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| 相关关键词：臭氧 , 北极 |
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| 环境危机北极首次出现臭氧破洞 ＠ 2011-10-03T18: |
| 〔本报讯〕外电报导，北极臭氧层逐渐稀薄，今年恶化情况更上高峰，科学家指出，今年是首次出现北极臭氧层破洞，恶化速度令人担忧。 外电指出，距离北极第13公里处，有将近80％的臭氧散失，形成如南极般的臭氧层破洞。面对这样的环境危机，科学家分析，形成北极臭氧成破洞 |
| 关键词：臭氧 北极 |
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