The algorithm walks the tree recursively. At each node, it checks: does this node's bounding box overlap with the query rectangle? If not, the entire subtree gets pruned (skipped). If it does overlap, it tests the node's points against the query and recurses into the children.
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在甘肃省兰州市枣林西社区，细致了解适老化改造情况，强调“老有所养、老有所医、老有所学、老有所乐，现在老龄工作还只是初步开展起来，要不断丰富发展完善，健全服务体系、提高服务水平”。。PDF资料对此有专业解读
At some point everyone had forgotten about that and there was a scramble to renew it properly because after that the IRS left us alone.