be dead to the world
陷入非常深入的睡眠狀態(tài)，對外界刺激沒有反應
口語·形容睡得很沉
英文釋義
to be sound asleep or completely unaware and unresponsive to one's surroundings
例句
After the long hike, she was dead to the world and didn't hear the alarm.
典故來源
源自比喻，指人像死去一樣對外界毫無反應，常形容深度睡眠或昏迷狀態(tài)。