Night milk quickened the start of sleep and caused the mice to sleep longer.

夜间牛奶加快了睡眠的开始，使老鼠睡得更久。

youdao

When you sleep longer to catch up, try to do so by going to bed earlier than usual.

为了要赶上，当你想要去睡更久，那么就试着比平时要早一些睡觉。

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If you sleep longer than about 20 minutes, you'll pass out of REM and into other (deeper) phases of sleep.

如果你睡了超过20分钟，你会度过眼动睡眠而进入睡眠的下一阶段，深度睡眠。

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Last August,a study in the journal Sleep Medicine said children who go to bed after nine o'clock took longer to fall asleep and slept less.

VOA: special.2010.06.09

It's likely the device let me sleep longer because it thought I hadn't slept enough, he adds.

WSJ: Smart Alarms Decide When You Should Really Wake Up

More sleep: Formula milk is more difficult to digest for the baby so they tend to sleep longer.

BBC: Breast vs bottle

The story begins with Iichiro waking up, looking at the clock, guiltily asking himself whether he might sleep longer, and feeling both anxious and depressed by the realization that he has no reason to get up.

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