Researchers tested this by recruiting 12 self-described sound sleepers to spend three nights in a lab.

研究者让12名自称睡眠好的人在实验室度过三晚，并对他们进行测试。

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Researchers tested this by recruiting 12 self-described sound sleepers to spend three nights in a lab.

研究者让12名自称睡眠好的人在实验室度过三晚，并对他们进行测试。

youdao