В России ответили на имитирующие высадку на Украине учения НАТО18:04
▲图片来源：https://x.com/Prathkum/status/2027069198091071664/photo/2
。关于这个话题，51吃瓜提供了深入分析
Дания захотела отказать в убежище украинцам призывного возраста09:44
相较于这些充满想象力和争议的智能硬件，智能手机与AI融合的成效则显得平平无奇。
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.