locomotive waiting track

例句：

1. 1.The train is waiting at the locomotive waiting track.
   火车正在机车待行轨道上等待。
2. 2. The engineer checked the locomotive's condition before starting the journey.
   工程师在出发前检查了机车的状况。
3. 3. The locomotive was waiting for the signal to start.
   机车在等待信号开始运行。