rail brace

例句：

1. 1.The train's rail brace was damaged during the accident.
   火车的轨道支架在事故中受损。
2. 2. The engineer used a rail brace to reinforce the bridge.
   工程师使用轨道支架加固了桥梁。
3. 3. The new rail brace is designed to prevent derailments.
   新的轨道支架设计用来防止脱轨。