工人们正在沿海路线安装新的火车轨道。

Workers are installing new train ___tracks along the coastal route.

该项目包括在山区铺设一段50英里长的轨道。

The project includes laying a 50-mile stretch of ___track through mountainous terrain.

出于安全原因，禁止在铁路轨道上或附近行走。

For safety reasons, it is prohibited to walk on or near the railway ___tracks.