腳尖距離很重要。不過我不是專家不敢亂說，如果你膝蓋不行，想練臀部肌肉我還有招，嘿嘿嘿

來源: 玉珠於 2015-05-21 13:31:49 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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