Exploration of the Moon
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，更多细节参见safew官方版本下载
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.
但 Lambert 的判断是，这些能力恰恰也是最难通过蒸馏获得的。