fast asleep
sound asleep
In the middle of the night,when the owner was fast asleep,he got up and opened the door of the cage.午夜,当店主熟睡的时候,他悄悄起身,打开了鸟笼门,小声地对鹦鹉说:“现在,出去吧.”
Imagine this:it’s four o’clock in the morning and you’re sound asleep.设想一下:现在是早晨4点,你已经熟睡.