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关注：1
2013-05-23 12:21
求翻译：研究表明青少年每天需睡八至九小时，如果睡眠不足，白天常会犯困，精神难以集中。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
研究表明青少年每天需睡八至九小时，如果睡眠不足，白天常会犯困，精神难以集中。
问题补充： |
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2013-05-23 12:21:38
The study shows that young people sleep eight to nine hours per day, get enough sleep during the day and often would fall asleep, inability to concentrate.
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2013-05-23 12:23:18
正在翻译，请等待...
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2013-05-23 12:24:58
The research indicated the young people must rest every day eight to nine hours, if the sleep is insufficient, daytime Chang Hui gets sleepy, the spirit concentrates with difficulty.
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2013-05-23 12:26:38
Research shows that young people need 8-9 hours of sleep per day, if lack of sleep, often sleepy during the day, and spirits difficult to concentrate.
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2013-05-23 12:28:18
正在翻译，请等待...
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