五魔方(Megaminx)解法
阅5143转21刚刚A Sangaku by a Teen
阅181转0刚刚Triangles, Squares and Areas from Temple Geometry
阅75转0刚刚Two Arbelos, Two Chains
阅74转0刚刚7 = 2 + 5 Sangaku
阅108转0刚刚3
阅48转0刚刚A 49<sup>th</sup> Degree Challenge
阅33转0刚刚1 + 27 = 12 + 16 Sangaku
阅104转0刚刚
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设计心理学2：与复杂共处
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