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.
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每年春节，我和两位00后表妹都会回到川东一个湿漉漉的乡镇，彻夜长谈。我们把过去一年的重要经历和家庭秘辛逐一摊开，交换彼此的困惑与判断。，这一点在夫子中也有详细论述