What this means for the web
Shortcuts: For common scenarios, we pre-calculate the travel time/distance (the "shortcut") between border points within the same cluster and also to border points of immediately adjacent clusters.
，这一点在WPS下载最新地址中也有详细论述
人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用
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