Bats sleep during the day.

蝙蝠在白天睡觉。

youdao

They sleep during the day.

他们在白天睡觉。

youdao

Patients tend to sleep during the day, and at night they watch TV, play computer games, and read manga (comic books).

这些患者白天睡觉，夜里看电视，玩电脑游戏，看漫画。

youdao

And if they do not have a traditional coffin to sleep in during the day, they can find other answers, such as using a car.

VOA: special.2010.01.20

Probably the best answer is our body is worn out during the day and sleep is necessary to put it back into shape.

最佳的答案应该是,一天下来，我们的身体已经疲惫了,有必要进行睡眠，以恢复状态。

耶鲁公开课 - 心理学导论课程节选

Sleep apnea not only reduces sleep quality and makes people feel tired during the day.

VOA: special.2011.05.04

While it is common for people to do things in their sleep that they do during the day, they do them more clumsily or inaccurately, says Anderson.

BBC: Sleep: Weird things people do in their sleep

Melatonin is vital for maintaining the body's correct diurnal rhythms - helping a person sleep at night and stay awake during the day.

BBC: News | Health | Immune system blamed for Chronic Fatigue Syndrome

If snoring is combined with feeling sleepy during the day and experiencing pauses in breathing during sleep, people may be suffering from the more serious sleep apnoea - which affects 10 to 20% of snorers - and should see their GP.

BBC: Snoring cures success 'exaggerated'