以色列不仅拥有大量本土半导体公司，更是全球顶尖芯片公司最重要的研发和制造基地之一。
The algorithm maintains a running "best distance" that starts at infinity. As it walks the tree, it checks each visited point and updates the best distance if it finds something closer. Before recursing into a child node, it checks whether the closest possible point in that child's bounding box is farther than the current best. If so, the entire subtree gets pruned.，更多细节参见服务器推荐
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