flange of rail

例句：

1. 1. The train's wheels were fitted with a sturdy rail flange to prevent the wheels from slipping off the tracks.
   火车的轮子装配了一个坚固的钢轨凸缘，以防止车轮从轨道上滑落。
2. 2. The engineer carefully inspected the rail flange before installing it on the bridge.
   工程师在安装这个钢轨凸缘之前仔细检查了它。
3. 3. The construction crew had to remove the old rail flange and replace it with a new one to accommodate thenew railway line.
   施工队不得不拆除旧的钢轨凸缘，并换上新的以适应新铁路线。