to drift off to sleep 渐渐入睡

英文释义

To slowly and gently fall asleep. (NOTE: also "to drift off")

例句

When our boring company president gives a particularly long and tedious speech, some audience members will drift off to sleep.

我们公司乏味的总裁发表了特别冗长沉闷的演讲，部分听众慢慢睡着了。