blacks out

1.用墨涂掉,抹杀;使停刊;封锁(新闻)

2.【戏】使舞台转暗;【航空】(空袭时)熄灯;(战时)实行灯火管制

3.(飞机等急降时)眼睛发黑,头发昏;【无线电】干扰

1.to suddenly become unconscious

2.to prevent someone from reading or seeing something by covering it with something dark

3.to make a place dark by turning off all the lights, for example so that the enemy cannot see a place at night.