steam line smothering

例句：

1. 1.The steam line runs through the city center.
   蒸汽管线穿过市中心。
2. 2. The engineer used a steam line to remove the blockage.
   工程师使用蒸汽管线来清除堵塞。
3. 3. The steam line is essential for maintaining the water pressure in the pipeline system.
   蒸汽管线对于维持管道系统中的水流压力至关重要。