be sound asleep
基本解释
- 熟睡
- 酣睡
英汉例句
- In winter all the living things seem to be sound asleep.
冬天，一切生命似乎都沉睡着。 - You will be fast [sound] asleep by the time we get home.
等我们到家时，你会睡得很熟了。 - Receiving no answer, Old Chuan assumed his son must be sound asleep again; so he went out into the street.
老栓听得儿子不再说话，料他安心睡了；便出了门，走到街上。