lighting mains

例句：

1. 1. The new lighting mains have a brighter light than the old ones.
   新的照明主线路比旧的更亮。
2. 2.The electrical engineer was asked to inspect the lighting mains for safety reasons.
   电气工程师被要求出于安全原因检查照明主线路。
3. 3. The lighting mains were installed in the basement of the building.
   照明主线路安装在建筑物的地下室。