rail tie bar

例句：

1. 1.The train was delayed due to a broken rail tie bar.
   由于一根铁轨连接杆断裂，火车晚点了。
2. 2. The engineer inspected the rail tie bar before starting the train.
   工程师在启动火车前检查了铁轨连接杆。
3. 3. The railway company replaced the rail tie bar after the accident.
   事故发生后，铁路公司更换了铁轨连接杆。