With a thousand points, you barely notice the delay. With a million, you're doing a million distance calculations for every single query. On a phone updating the map as the user scrolls, that's untenable.
圖像加註文字，謝展寰告誡飼主給狗隻餵食人類食物「風險很大」。香港動物權益及福祉協會主席賴嘉敏律師指出，同樣基於選擇，食環署的立法建議表明，獲簽發牌照加註的餐廳將在門口有清楚標識，不喜歡寵物，或者對寵物毛髮過敏的食客，不應強行進入。
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В Финляндии предупредили об опасном шаге ЕС против России09:28
Immediately after Fincke's medical event, NASA officials said they wouldn't name the affected astronaut, citing medical privacy concerns. During a news briefing the next day, NASA's chief health and medical officer J.D. Polk said the incident wasn't an injury in the course of work, though he stopped short of saying whether it was some other kind of injury.
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Author(s): Junwei Che, Xuezhi Wang。业内人士推荐safew官方版本下载作为进阶阅读
从这句话当中，也可以理解杨植麟为什么选择“慢”。