// 4. 空间敏感: 堆排序
A quadtree does the same thing for two-dimensional space. It takes a rectangular region and divides it into four equal quadrants: northwest, northeast, southwest, southeast. If a quadrant has too many points in it, it subdivides again and again. Each subdivision creates smaller and smaller cells where points are densely packed.
，更多细节参见safew官方版本下载
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江门市新会区古道柑普茶业有限公司同样有外地“工艺皮”供应，记者咨询能否提供“地理标志”时，负责人称无需代加工，可直接“售卖”资质。。旺商聊官方下载对此有专业解读
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