集市上，人物形形色色。有一次，冬从集上回来，绘声绘色地给我讲了件遇到的事：在集市尽头的白沙河桥下，停着一辆灰色面包车，车旁围着一群人，每个人都拎着一个大黑塑料袋，里面鼓鼓的装着什么，一些人手里举着钞票。冬很好奇，凑过去看热闹，结果被人群外围放哨的两个男人劝离。冬蹲在地上，假装系鞋带，听到他们在争相竞价。冬转了一圈回来，看见拎着黑塑料袋的人们愣在原地，盯着扬长而去的面包车，久久缓不过神来。他们彼此打听对方的出价，有人说四百，有人说三百，有人咬着牙根不说。冬问他们买的什么，他们支支吾吾地说，厨具。
For example, a 500km route might be broken down into ~100 such shortcuts. If each A* shortcut calculation explores 100-1000 detailed road segments, the total detailed segments visited by A* might be around 10,000-50,000. Compare this to the 1,000,000+ segments the old A* might have needed for the entire route!，推荐阅读搜狗输入法下载获取更多信息
。关于这个话题，Line官方版本下载提供了深入分析
The A Wall:* Calculating a 200-300km car route (or even shorter bicycle/pedestrian paths) could mean visiting over a million road segments, taking 10-20 seconds. For longer trips, this wait could become frustrating.
圖像來源，GREG BAKER/AFP via Getty Images。关于这个话题，WPS官方版本下载提供了深入分析