group of tracks

例句：

1. 1.The train is scheduled to arrive at the station in five minutes.
   火车预计五分钟后到达车站。
2. 2.The group of tracks is being reconstructed due to the construction project.
   由于建设项目，一组轨道正在重建。
3. 3. The sound of the train's whistle echoes through the valley.
   火车的汽笛声在山谷中回荡。