When the person is walking, it is calcaneal pedal ground first, at the same time the ground gives a counterforce, drive body advancement thereby.是什么意思_When the person is walking, it is calcaneal pedal ground first, at the same time the ground gives a counterforce, drive body advancement thereby.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句