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.
These aren't contrived scenarios invented by test authors in total vacuum. They're consequences of the spec's design and reflect real world bugs.，更多细节参见一键获取谷歌浏览器下载
Continue reading...，这一点在WPS下载最新地址中也有详细论述
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