该睡觉了

it's time to go to bed

→ 该
phrase Rare #31,628
it's time to go to bed Suggests that it is time for someone to go to sleep, often because it is late.
CH: 已经很晚了,我们该睡觉了。
EN: It’s already late; it’s time for us to go to bed.

该睡觉了

It's time to go to bed.

— 触不可及 (2011)

该睡觉了,听她的话

It’s time to go to bed. Listen to her.

— 不可告人 (2006)

那么晚了,该睡觉了。

It’s so late; it’s time to go to bed.

你该睡觉了

You should go to bed now.

— 女巫 (2016)