scraping dredger

例句：

1. 1. The scraping dredger was used to clear the riverbed of debris.
   刮板式挖泥船被用来清理河床的杂物。
2. 2. The scraper dredge was designed to efficiently remove sediment from the water.
   刮浆机设计用来从水中高效地移除沉积物。
3. 3.The scraper dredge was a crucial tool in the restoration of the river's ecosystem.
   刮浆机是恢复河流生态系统的关键工具。