| 词汇 | sonar |
| 释义 | sonar noun [ U ] uk/ˈsəʊ.nɑːr/ us/ˈsoʊ.nɑːr/ 声纳，声呐（一种声波探测仪器，用声波测定水的深度或水下物体的方位） equipment, especially on a ship, that uses sound waves to discover how deep the water is or the position of an object in the water, such as a group of fish Compare: echo sounderradar |
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