clamshell dredger

例句：

1. 1. The clamshell dredger was used to clear the mud from the riverbed.
   蛤蜊挖掘船被用来清理河床的淤泥。
2. 2. The dredger operator carefully maneuvers the vessel through the treacherous waters.
   挖泥船操作员小心翼翼地操纵着船只穿越危险的水域。
3. 3. The clamshell dredger is essential for maintaining the water quality in our coastal areas.
   蛤蜊挖掘船对于维护我们沿海地区的水质量至关重要。