Jim Lovell, Apollo 13 astronaut, dies aged 97
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，这一点在夫子中也有详细论述
The challenge was clear: achieve a quantum leap in speed while preserving extreme flexibility, minimal storage, regional map support, and dynamic update capabilities. Standard Highway Hierarchies were a starting point, but we needed something more – a uniquely OsmAnd solution.
This step rapidly finds the optimal sequence of border points and shortcuts to get from your start cluster's periphery to your target cluster's periphery. It's incredibly fast because it's ignoring all the tiny roads within intermediate clusters.
Author(s): Fangwei Yang, Haoran Sun, Xiaoxin Yang, Xu Li, Gang Yang