rail insulating spacer

例句：

1. 1. Theengineer used a rail insulating spacer to prevent the train from derailing.
   工程师使用一个轨道绝缘间隔物来防止火车出轨。
2. 2. The new design uses aspacer strip between the tracks to improveride comfort.
   新设计在轨道之间使用了间隔条，以改善乘坐舒适度。
3. 3. The spacer block was designed to fit snugly into the gap between the rails, providing excellent support.
   这个间隔块被设计得可以紧密地嵌入轨道之间的间隙中，提供极好的支撑。