tuck-in

例句：

1. 1. It's time to tuck in and get some sleep.
   该睡觉了。
2. 2. She always tucks in her children before bed.
   她总是在睡前照顾好孩子们。
3. 3. The family decided to tuck in early tonight.
   家人决定今晚早点休息。