re-railing device

例句：

1. 1. The new re-railing device has greatly improved the safety of the railway line.
   新的重铁设备大大提升了铁路线的安全性。
2. 2. The construction crew used a re-railing device to reinforce the track during the night.
   施工队在夜间使用重铁设备加固轨道。
3. 3.The re-railing device was installed to prevent trains from colliding with each other.
   重铁设备被安装来防止火车相互碰撞。