railex

例句：

1. 1. The train was delayed due to the damaged railex.
   由于损坏的枕木，火车晚点了。
2. 2.The engineer inspected the railex before starting the engine.
   工程师在启动引擎前检查了枕木。
3. 3. The construction crew replaced all the railex that were damaged during the flood.
   在洪水期间受损的枕木都被替换了。