目录前言分形：自然界的数学之美曼德勃罗集朱利亚集数学曲线：优雅的几何形状玫瑰线心形线阿基米德螺旋线完整源码总结前言
I want my users to be able to write an article in Markdown, have it stored in the MySQL database (with the option to edit it 开发者_运维问答in the future), and displayed for other users.
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