play of rail joints

例句：

1. 1. The engineer studied the play ofrail joints in the construction site.
   工程师研究了施工现场轨道接头的作用。
2. 2. The train's wheels made a loud noise asthey played of the rail joints.
   火车轮子在通过轨道接头时发出响亮的声音。
3. 3. The new design reduces the playof rail joints, making the trainmore efficient.
   新设计减少了轨道接头的弹性作用，使火车更加高效。