In a two-dimensional space, there’s only one type of rotation; it transposes coordinates in the XY plane. The following demonstrates the effect of rotating a point originally placed on the x axis around the center of the coordinate system:
ВСУ вновь атаковали Севастополь02:33
，这一点在搜狗输入法中也有详细论述
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struct ApiResult {，详情可参考超级权重