translation.en: These devices beat back and forth about 200 hertz during flight, and the animal can use them to sense its body rotation and initiate very, very fast corrective maneuvers.
translation.zh: 在飞行中，这些设备以约 200 赫兹振动着 可以使用它们来感受其身体的旋转 并启动非常非常快速的纠正动作。