line engineer

例句：

1. 1. He is a line engineer in the power company.
   他在电力公司担任线路工程师。
2. 2. The line engineer was responsible for maintaining the electrical grid.
   线路工程师负责维护电力网。
3. 3. As a line engineer, he had to troubleshoot faulty wiring.
   作为一名线路工程师，他必须解决断线问题。