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关注：1
2013-05-23 12:21
求翻译：我国的环境污染预警系统的研究起步于从20世纪90年代中期是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
我国的环境污染预警系统的研究起步于从20世纪90年代中期
问题补充： |
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2013-05-23 12:21:38
China's environmental pollution warning system started in the mid-1990s.
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2013-05-23 12:23:18
China's environmental pollution warning system from the research began in the 1990s medium-term
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2013-05-23 12:24:58
Our country's environmental pollution early warning system research start in from 1990s intermediate stages
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2013-05-23 12:26:38
Study on early warning system of environmental pollution in China started in the mid 1990 of the 20th century
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2013-05-23 12:28:18
正在翻译，请等待...
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