ground track

例句：

1. 1. The train is running on the ground track.
   火车正在运行在地面上。
2. 2.The engineer inspected the ground track before starting the construction.
   工程师在开始施工前检查了地面轨道。
3. 3. The ground track was damaged during the heavy rain.
   大雨损坏了地面轨道。