蒙头大睡 meaning in Chinese

sleep soundly with one's face covered under sheets; tuck oneself in and sleep like a log; (he) was fast asleep with the quilt drawn over (his) head

" take this powder , " aladdin said to the princess . " put it in the magician ' s food . when he eats it , he will fall into a deep sleep .
“拿好这药粉， ”阿拉丁对公主说， “把它放进魔术师的食物里。他一吃了这药粉，就会蒙头大睡的。 ”
It might be two hours later , probably near eleven , when i - not having been able to fall asleep , and deeming , from the perfect silence of the dormitory , that my companions were all wrapt in profound repose - rose softly , put on my frock over my night - dress , and , without shoes , crept from the apartment , and set off in quest of miss temple s room
也许过了两小时，可能是将近十一点了，我难以入睡，而且从宿舍里一片沉寂推断，我的同伴们都已蒙头大睡。于是我便轻手轻脚地爬起来，在睡衣外面穿了件外衣，赤着脚从屋里溜了出来，去寻找坦普尔小姐的房间。