single ladder dredger

例句：

1. 1. Thesingle-ladder dredgerwas used to clean the riverbed.
   单桅式挖泥船被用来清理河床。
2. 2. The single-ladderdredger was a crucial tool inthe construction of the new bridge.
   单桅式挖泥船是建造新桥时的关键工具。
3. 3. The single-ladder dredger was able to handlethe heavy sediment load efficiently.
   单桅式挖泥船能够有效地处理沉重的沉积物负载。