Scientists Discover Fastest Degrading Bioplastic in Seawater
False Negatives
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南方周末：具体落地执行上，你是否有明确的“时间表”和“路线图”？
For well-distributed points, nearest neighbor search is often near O(logn)O(\log n)O(logn) in practice. In the worst case (all points clustered tightly or along a line), it can degrade to O(n)O(n)O(n), but this is uncommon with typical spatial data.