canal plugger

例句：

1. 1. The canal dredger was used to clear the channel of debris during the flood season.
   在洪水季节，运河疏浚船被用来清除河道中的杂物。
2. 2. The canal blocker was designed to prevent the flow of water in the canal during low tide.
   运河堵塞器被设计成在潮汐期间阻止水流通过运河。
3. 3. The canal clog remover was used to clear the canal of sediment and debris after heavy rains.
   暴雨过后，使用运河疏浚器清除河道中的沉积物和杂物。