名词
中文翻译：声纳浮标
同义词：
['sonar buoy', 'sonar marker']
例句：
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1. The sonar pinger was used to detect underwater objects.
声纳浮标用于探测水下物体。
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2. The sonar pinger was used to map the ocean floor.
声纳浮标被用来绘制海洋底部地图。
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3. The sonar pinger was used to locate a lost diver.
声纳浮标被用来定位一名失踪的潜水员。