要是膝蓋下來的垂線不可以超過腳尖，人必須前傾。否則的重必然落在腳後跟以後，和她說的腳掌中心矛盾，

來源: huntridge 於 2022-04-01 16:35:43 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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