bucket-ladder dredger

例句：

1. 1. The bucket-ladder dredger was used to clean the riverbed during the flood season.
   在洪水季节，桶梯式疏浚机被用来清理河床。
2. 2.The bucket-ladder dredger was a crucial tool in the restoration of the damaged dam.
   桶梯式疏浚机是修复受损大坝的关键工具。
3. 3.The bucket-ladder dredger was able to remove large rocks from the riverbed without damaging the surrounding environment.
   桶梯式疏浚机能够从河床上移除大型岩石，而不会破坏周围的环境。