elastic rail spike

例句：

1. 1.The railway was damaged by a sudden elastic rail spike.
   铁路因突然的弹性钢轨尖而受损。
2. 2.The engineer used an elastic rail spike to fix the broken rails.
   工程师使用弹性钢轨尖来固定断裂的轨道。
3. 3. The train was delayed due to the elastic rail spike in the track.
   由于轨道中的弹性钢轨尖，火车被延误了。