back-up emergency house light的意思|示意

后备紧急场内照明灯 ... back-up 后备节目；后援设备 back-up emergency house light 后备紧急场内照明灯；观众席后备紧急照明灯 bad language 不良用语 ...

观众席后备紧急照明灯 ... lighten-up with light fixtures 减轻了光装置 back-up emergency house light 观众席后备紧急照明灯 high toss pull up light 大角度拉起轰炸拉起指示灯 ...