depressed conductor-rail

例句：

1. 1. The train was traveling at a depressed speed, causing delays in the schedule.
   火车以缓慢的速度行驶，导致时间表延误。
2. 2.The engineer noticed that the conductor rail was worn out, which could lead to safety hazards.
   工程师注意到信号轨道磨损严重，这可能导致安全隐患。
3. 3. The railway company decided to replace the depressing conductor rail with a new one to improve passenger experience.
   铁路公司决定更换那根令人沮丧的信号轨道，以提高乘客体验。