rail

/reɪl/

a barrier consisting of a horizontal bar and supports

中文释义：栏杆；铁轨

The old wooden bridge had a sturdy metal rail to prevent falls.

那座旧木桥有一根坚固的金属栏杆以防坠落。

The train derailed because a section of the rail was damaged.

火车脱轨是因为一段铁轨损坏了。