这种现象的原因是，女性要比男性更容易从慢波睡眠，也就是“深度睡眠”中获得休息，科学家们在联合专业睡眠协会的年度会议上发布了这一消息。

This could be because slow-wave, or ‘deep sleep’, benefits women more than men, the Associated Professional Sleep Societies’ annual conference heard.

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该发现在2008年睡眠专业协会第22届年会上作了汇报。

Their findings were reported here at Sleep 2008:22nd Annual Meeting of the Associated Professional Sleep Societies.

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研究人员在本周西雅图举办的SLEEP 2009暨睡眠相关专业协会第23届年会上发表了这一结论。

That's the conclusion of researchers who presented their research this week in Seattle at Sleep 2009, the 23rd Annual Meeting of the Associated Professional Sleep Societies.

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