culvert propulsion

例句：

1. 1.The engineer used a culvert propulsion to clear the floodwaters.
   工程师使用涵洞推进来清除洪水。
2. 2.The culvert propulsion was designed to withstand high pressure.
   涵洞推进器设计用来承受高压。
3. 3. The culvert propulsion was crucial in the construction of the new bridge.
   涵洞推进在建造新桥中至关重要。