... echo-box 回波共振器，空腔共振器 echo-beating 回波脉冲 echotomographic syaxis 回声x射线层析照相系统 ...
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For example, one echo they quickly identify is the one they associate with a moth, which is common prey for a bat, particularly a moth beating its wings.
例如，他们很快就能识别出与飞蛾有关的回声，飞蛾是蝙蝠的常见猎物，尤其是扑打翅膀的飞蛾。
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