hammer track

例句：

1. 1. The construction crew was busy hammering the track for the new railway.
   施工队忙于为新铁路铺设轨道。
2. 2.The engineer used a hammer to mark the exact location of the track.
   工程师用锤子标记了轨道的精确位置。
3. 3. The hammer track is essential for maintaining the smooth operation of the trains.
   锤击轨道对于保持火车平稳运行至关重要。