1 [U] the state of being able to see, hear, feel, etc 清醒;有知觉;有感觉:
As he fell, he hit his head and lost consciousness.他跌倒时撞着头部,失去了知觉。She regained consciousness after two weeks in a coma.她昏迷了两个星期才恢复知觉。
2 [U] [sing] consciousness (of sth) the state of realizing or noticing that sth exists 察觉;意识到:
There is (a) growing consciousness of the need to save energy.人们越来越意识到必须节约能源。