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Stories by 欣欣
- 3 Published Stories
Sin²a+Con²a=1+0
19
0
9
三角函数拟人,2013年写
作者 jingsann
原创小说 - BL - 短篇 - 完结
Sin²a +Cos²a =1
Cos平方+Sin平方=1
此公式的Cos和Sin为兄弟,1为父,0为母。公式本来是Cos²a...
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