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关注：1
2013-05-23 12:21
求翻译：科学家多年来一直致力于研究人类活动对自然环境的影响是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
科学家多年来一直致力于研究人类活动对自然环境的影响
问题补充： |
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2013-05-23 12:21:38
Scientists over the years has been committed to the study of human activities on the natural environment
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2013-05-23 12:23:18
Scientists worked for many years to study the impact human activities on the natural environment
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2013-05-23 12:24:58
The scientist for many years continuously has devoted in studying the humanity to move to the natural environment influence
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2013-05-23 12:26:38
Scientists for years have been committed to study the impact of human activities on the natural environment
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2013-05-23 12:28:18
正在翻译，请等待...
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