Instructons:Step on the footboard with two feet,hold the two handles,utilize the strength of waist to move the legs like a pendulum.是什么意思_Instructons:Step on the footboard with two feet,hold the two handles,utilize the strength of waist to move the legs like a pendulum.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句