river dredging

例句：

1. 1. The river dredging project has been ongoing for several months now.
   河流疏浚项目已经持续了几个月。
2. 2. The engineers are responsible for the river dredging work.
   工程师们负责河流疏浚工作。
3. 3. The river dredging is expected to improve the water quality in the area.
   预计河流疏浚将改善该地区的水质。