It is impossible to make up the lost sleeping hours during the workweek.

要想在工作日补上失去的睡眠时间是不可能的。

youdao

One group was exposed throughout their night-time sleeping hours to the same three vowels, while the others listened to the other, easier-to-distinguish vowel sounds.

一个组的婴儿夜间睡觉的时候还放着同三个元音的录音，而其他的婴儿只听其他的较容易区分的元音。

youdao

Maybe you pride yourselves on only sleeping a few hours a night.

也许你以每晚只睡几个小时而自豪。

youdao

So I ended up sleeping maybe 4 or 5 hours and going to class.

结果我只能睡四五个小时，然后就要去上课。

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