It used a fast-created quad-tree to execute region query, which not only improved the query efficiency, but also shortened the time of constructing a spatial index.

使用快速生成的四叉树进行区域查询，在提高查询效率的同时，有效缩短构造空间索引的时间。

youdao

So we literally can look at the map of where we have cars and then we can actually query those owners and ask what are the destinations you like to go in your region.

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