从表面看，夜总会热闹仍在，但维持得越来越费力，像一场必须按时完成的演出。在夜总会大厅里，客人依然能看到星星状灯泡拼成的“星光顶”，能看到红色半圆皮沙发、黑色光面茶几、热毛巾与骰子的仪式性摆放，能看到果盘与啤酒被当作“象征性消费”端上来，但包厢与舞池之间不再被人潮和脚步填满。
The pruned nodes (in red) represent entire regions of space that the algorithm never examines. The points inside those regions are never checked. Compare the "Nodes Visited" count to the total number of points. The quadtree is doing far less work than a brute-force scan.
。关于这个话题，夫子提供了深入分析
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human-like responses to a variety of prompts