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The spatial view (the grid of rectangles) and the tree view (the hierarchy of nodes) represent the same structure. Searching for a point means walking down the tree: at each node, you check which of the four children contains your target coordinate and recurse into that child. You never visit the other three.
。业内人士推荐谷歌浏览器作为进阶阅读
Amenity in a Florida backyard, perhapsThe answer is Pool.
31岁，身家90亿，90后白手起家女首富。