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out like a light
01
在深度睡眠中
(of a person) in a state of deep unconsciousness or sleep, typically due to extreme fatigue
What is the origin of the idiom "out like a light" and when to use it?
The idiom "out like a light" originates from the imagery of a sudden and deep state of unconsciousness or sleep, where an individual falls asleep or loses consciousness very quickly, just as if a light were turned off. It is often used to describe someone who becomes completely relaxed or falls asleep so rapidly that there is no resistance or struggle. The expression has been used since the early 20th century to describe the swiftness and completeness with which someone enters a deep sleep or unconscious state.
例子
The anesthesia took effect, and he was out like a light before the surgery began.
The long day's work left him drained, and he was out like a light in his recliner.
As soon as my head hit the pillow, I was out like a light.
The warm bath and cozy blankets made me out like a light in no time, enjoying a deep and restful sleep.
After the exhausting hike, I was out like a light as soon as I hit the bed.
