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关注：1
2013-05-23 12:21
求翻译：有50人从事研究与开发是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
有50人从事研究与开发
问题补充： |
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2013-05-23 12:21:38
50 people engaged in research and development
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2013-05-23 12:23:18
There are 50 people engaged in the research and development
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2013-05-23 12:24:58
Some 50 people are engaged in the research and the development
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2013-05-23 12:26:38
50 people are engaged in research and development
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2013-05-23 12:28:18
50 people are engaged in the research and development
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