/ˈblækaʊt/
a temporary loss of consciousness, sight or memory 一时性黑蒙；眼前昏黑；短时失忆
She had a blackout and couldn’t remember anything about the accident.
她一时失忆，那场事故怎么也想不起来了。
a situation when the government or the police will not allow any news or information on a particular subject to be given to the public 新闻封锁