transition rail

例句：

1. 1.The transition rail is designed to connect two different tracks.
   过渡轨道设计用来连接两条不同的轨道。
2. 2.The transition rail is essential for the smooth operation of the train.
   过渡轨道对于火车的平稳运行至关重要。
3. 3. The transition rail was installed to improve the efficiency of the railway system.
   过渡轨道的安装是为了提高铁路系统的效率。