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关注：1
2013-05-23 12:21
求翻译：在过去的20年中，科学技术已经经历了许多变化是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
在过去的20年中，科学技术已经经历了许多变化
问题补充： |
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2013-05-23 12:21:38
In the past 20 years, science and technology has undergone many changes
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2013-05-23 12:23:18
In the last 20 years has undergone many changes, and science and technology
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2013-05-23 12:24:58
In the past 20 years, the science and technology has already experienced many changes
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2013-05-23 12:26:38
In the past 20 years, science and technology has undergone many changes
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2013-05-23 12:28:18
In the past 20 years, science and technology has undergone many changes
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