Definition
to ensure a child is comfortably settled in bed by neatly arranging the bedcovers around them.
为（孩子）掖被子
Every night, I tuck my child in to ensure they can sleep soundly.
每天晚上，我都会为我的孩子掖好被子，确保他们能安稳入睡。
My grandmother enjoys tucking me in at night, making me feel secure.
我的祖母喜欢在晚上帮我掖好被子，让我感到安心。
During the heavy rain, my parents carefully tucked me in so I could sleep peacefully.
在下大雨的时候，我的父母仔细地帮我掖好被子，让我能安然入睡。