释义 |
so.narH5sEJ7nB:5, $5soJ7nB:rn [U]equipment, esp. on a ship, which 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声纳(一种声波探测仪器,用声波或超声波测定水的深度或水下物体的方位)(fig.) Bats have a sort of built-in sonar to help them find their way in the dark.蝙蝠体内有一种声波探测器,它能帮助蝙蝠在黑暗中辨明方向。
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