sonar countermeasures and deception

例句：

1. 1. Thesubmarine uses sonar to detectunderwater objects.
   潜艇使用声纳来探测水下物体。
2. 2. The sonar system isdesigned to detect underwater obstacles.
   声纳系统旨在探测水下障碍物。
3. 3. The sonar operator carefully scans the seabedfor any hidden dangers.
   声纳操作员仔细扫描海床，寻找任何隐藏的危险。