名词短语
中文翻译：障碍物避免声纳
同义词：
['obstacle avoidance sonar', 'obstacle avoidance sonar system例句：1. The sonar is used to detect underwater obstacles.（声纳用于探测水下障碍物。）']
例句：
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1. The sonar is used to detect underwater obstacles.
声纳用于探测水下障碍物。
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2. The sonar system was designed to navigate through the deep sea.
声纳系统被设计用来在深海导航。
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3. The sonar can detect objects up to a kilometer away.
声纳可以探测到一公里外的对象。