a time when all lights must be hidden by law, or when there is no light or power because of an electricity failure

wartime blackouts 战时灯火管制

Power lines were blown down and we had a blackout of several hours. 电线被吹断了，我们停了几个小时电。

the action taken to make certain that information about something is not reported to the public

a news blackout 新闻封锁

a short period when someone suddenly becomes unconscious

He can't drive because he suffers from blackouts. 因为暂时性昏迷他无法开车。