dunking sonar

例句：

1. 1.The sonar system detected the underwater object with incredible accuracy.
   声纳系统以惊人的准确性探测到了水下物体。
2. 2.The sonar was used to map out the ocean floor in the area.
   声纳被用来绘制出该区域的海洋底部地图。
3. 3.The sonar operator carefully monitored the depth and distance of the target.
   声纳操作员仔细监测目标的深度和距离。