The gas lamp gradually lost ground to electric lighting.
电灯逐步取代了煤气灯。
The gas lamp gradually lost ground to electric lighting.
煤气灯逐渐为电灯所代替。
Check emergency lighting systems. Sandbagging when possible should protect ground level emergency generators.
检验应急灯系统。学习应急。如果可能，沙袋应偏护一楼应急发电机。
Check emergency lighting systems. Sandbagging when possible should protect ground level emergency generators.
检验应急灯系统。学习应急。如果可能，沙袋应偏护一楼应急发电机。
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