Someone who is unconscious is in a state similar to sleep, usually as the result of a serious injury or a lack of oxygen. 不清醒的
adjective [原级] （尤指因头部受伤）昏迷的，不省人事的；（想法或感情）无意识的，潜意识的；没意识到某事物；（行为）下意识的，无意中做出的
By the time the ambulance arrived he was unconscious. 救护车赶到时他已神志不清。
noun [具体名词] 无意识（不察觉的心理活动）（the unconscious）
He knew that he might soon lapse into unconsciousness. 他知道他可能很快就会陷入昏迷状态。
- unconscious 出现在下面的课文中（提供视频、音频及笔记等可系统性学习）
- Lesson 18 Porpoises unconscious 形容词: 不省人事
