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关注：1
2013-05-23 12:21
求翻译：西方学者进行了大量调查，为了研究多长时间的课外作业才是适量的问题。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
西方学者进行了大量调查，为了研究多长时间的课外作业才是适量的问题。
问题补充： |
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2013-05-23 12:21:38
Conducted an extensive survey of Western scholars to study how long is the right amount of homework problems.
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2013-05-23 12:23:18
Western scholars have conducted an extensive survey, in order to study the length of time they had the problem is the only modestly.
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2013-05-23 12:24:58
正在翻译，请等待...
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2013-05-23 12:26:38
Western scholars made a lot of investigation, in order to examine the question of how much homework is the appropriate amount of time.
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2013-05-23 12:28:18
Conducted an extensive survey of Western scholars to study how long is the right amount of homework problems.
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