black out 有暂时失去知觉意思eg. He blacked out suddenly.他突然晕倒了。block out 还有 试图抹去记忆的意思. eg. He’s trying to block out memories of that accident. 他努力想抹去那次事故的记忆。black out 还有被禁播的意思eg. That film is blacked out.那部电影被禁播了。black out 还有使变成一片漆黑德意思The place was blacked out with the electricity cut off .
