记忆中的故乡是泛黄色的，一种被时间晒旧了的老照片的底色，好像永远停留在那个夏日的午后。知了在叫，麻雀掠过树梢。我站在家里二楼的屋顶上，吹着风，周围是一片矮房。
国家能源局监测数据显示，今年春节假期前三天，全国高速公路充电桩日均充电量达1180.08万千瓦时，同比增长63.05%，总充电次数140.99万次，5.33万台高速充电桩平稳运行。
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Games and physics simulations need to detect which objects are touching or overlapping. With nnn objects, checking every pair is O(n2)O(n^2)O(n2) comparisons, which gets expensive fast. A hundred objects means roughly 5,000 pair checks. A thousand means nearly 500,000.
Article InformationAuthor, 謝全恩（Osmond Chia）