dredger automated control system

例句：

1. 1.The dredger was used to remove the silt from the riverbed.
   抽水机被用来从河床中移除淤泥。
2. 2.The dredger operator carefully monitored the water level.
   抽水机操作员仔细监控水位。
3. 3.The dredger was essential for maintaining the cleanliness of the harbor.
   抽水机对于保持港口的清洁至关重要。