The researchers found women were more refreshed than men even when they slept the same number of hours and so concluded they must sleep more deeply.
研究人员们还发现，女性和男性睡眠时间相同的情况下，她们的精力会更充沛，由此推论，女性的睡眠要比男性深。
The researchers found women were more refreshed than men even when they slept the same number of hours and so concluded they must sleep more deeply.
研究人员们还发现，女性和男性睡眠时间相同的情况下，她们的精力会更充沛，由此推论，女性的睡眠要比男性深。
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