Basic Mandarin WordsApr 22, 20211 min readhttps://bigvvereps.wixsite.com/uvvmusiclanguages/chinese-lessons A flat configuration with four sides of equal length and four angles of 90°正方形，四方形
https://bigvvereps.wixsite.com/uvvmusiclanguages/chinese-lessons A flat configuration with four sides of equal length and four angles of 90°正方形，四方形
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