估計沒多少文化吧？每個台階需要一點範圍的長度和寬度，不然走起來不舒服的，你可以量一下家裏其他樓梯，有個概念

來源: mickey222 於 2017-09-03 18:29:34 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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