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现在还不知道为什么长时间的睡眠也会一直脑功能。
It's not known why a longer night of sleep could also hinder brain function.
youdao
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现在人们的睡眠时间相比一个世纪以前减少了20%。
People now sleep about 20% less than they did a century ago.
youdao
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现在人们的睡眠时间相比一个世纪以前减少了20%。
People now sleep about 20% less than they did a century ago.
youdao