类似整理扑克牌：每次拿一张新牌，插入到已排好序的牌堆中合适位置
投资 50 亿元，刘强东宣布造游艇
。业内人士推荐服务器推荐作为进阶阅读
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（三）在铁路、城市轨道交通线路、桥梁、隧道、涵洞处挖掘坑穴、采石取沙的；
We wanted a scenario where, say, 5 well-placed border points could efficiently represent an area with 5,000 internal points and 10,000 road edges. This would reduce those 10,000 edges to just 5*4/2 = 10 shortcuts for routing through that cluster at a high level – an incredible 1:1000 point ratio and a 30x reduction in edges to consider for the high-level path!