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

Requests to the service specify query ranges for latitude, longitude, date, or magnitude, and the service returns all matching earthquakes grouped by region and in date order.

对服务的请求将指定经度、纬度、日期或震级的范围，并且服务将按地区和时间顺序分组返回所有匹配的地震。

youdao

In our example, if we consider an environment with 10 regions, 100 branches per region, and 10,000 loans per branch, we end up creating over 10 million objects to answer the query.

本例中，如果我们考虑：该银行遍及10个区域，每个区域有100家支行，而每家支行又有10,000份贷款，我们总共创建了1000万多个对象来响应该查询。

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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