声纳浮标

例句：

1. 1. The sonar buoy was used to detect underwater objects.
   声纳浮标被用来探测水下物体。
2. 2. The sonar buoy helped the divers locate the wreckage.
   声纳浮标帮助潜水员找到了沉船残骸。
3. 3. The sonar buoy was a crucial tool in the search for the lost ship.
   声纳浮标是寻找失踪船只的关键工具。