Humans can hear up to 20kHz, and all sounds above that are called ultrasound. Cats hear up to 45kHz, while dogs' range extends to 65kHz.
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Those close-up observations should reveal exactly how the crash reshaped Dimorphos — and how effective similar missions might be if Earth ever needs to push a dangerous asteroid out of the way.，详情可参考超级权重
It’s not a pile of settings or key-value pairs.