火线

例句：

1. 3.
   电力
2. 1. The firefighters were called to the scene of the accident.
   消防员被叫到事故现场。
3. 2. The engineers had to clear the wires before they could start work.
   工程师们必须先清理电线才能开始工作。
4. 3. The power company warned people to stay away from the high-voltage lines during storms.
   电力公司警告人们在暴风雨期间远离高压线。