眠

例句：

1. 1. I need to catch up on some sleep before the exam.
   我需要在考试前补觉。
2. 2. The baby is sleeping soundly in his crib.
   宝宝在他小床上睡得安稳。
3. 3. He fell asleep while watching the movie.
   他在看电影时睡着了。