The findings suggest it is not merely sleep itself, or the passage of time, that is important for the problem solving, but the quality of sleep.

结果表示解决问题最重要的关键，不单是睡眠本身，或者睡眠时段，而是睡眠的质素。

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The woman's lips seemed to move, as though she were talking; but because she merely spoke in an undertone, or my senses were dulled by sleep, I did not catch a word she uttered.

那女人的嘴巴似乎在动，好象在讲话，但不知是因为她讲话的声音太低了，还是因为我的听觉已因浓浓的睡意而变迟钝了，总之她讲的话我一个字也没听清楚。

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