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2025年以来，公司在产品创新、海外扩张、新业务调整等方面多线出击，试图扭转局面。
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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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