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关注：1
2013-05-23 12:21
求翻译：许多科学家在很久以前就开始研究这一问题是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
许多科学家在很久以前就开始研究这一问题
问题补充： |
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2013-05-23 12:21:38
Many scientists began to study this problem a long time ago
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2013-05-23 12:23:18
Many scientists in a very long time before this issue
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2013-05-23 12:24:58
Many scientists in very long before starts to study this question
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2013-05-23 12:26:38
Before long, many scientists began to study the issue
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2013-05-23 12:28:18
many scientists in a very long time ago started to study this issue;
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