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近期 SaaS（软件即服务）类股票大幅下跌，主要源于 AI 带来的竞争压力。
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圖像加註文字，一些餐廳讓飼主與寵物犬在一欄之隔下用餐。但走在一些這樣的商場內，也不難看見狗主以寵物嬰兒車推著小型狗隻坐進餐廳裏就餐。
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.
Collins was also a parent to two young children. The fact that she was a working wife and mother was frequently brought up in press conferences at the time, with some journalists seemingly astonished that she could be both.