她說：「在歐洲，因母親接受已故捐贈者子宮而誕生的嬰兒非常少見。」
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，这一点在heLLoword翻译官方下载中也有详细论述
The efficiency depends on the query size relative to the data distribution. A small query in a sparse region prunes almost everything. A query that covers the whole space prunes nothing (because every node overlaps), degenerating to a brute-force scan. The quadtree gives you the most benefit when your queries are spatially local, which is exactly the common case for map applications, game physics, and spatial databases.
15:43, 27 февраля 2026Мир