区域划分能够优化位置数据库的拓扑结构，有效地降低查询和更新代价。
Zone partition can effectively optimize the topology of location databases and efficiently reduce the cost of location paging and location update.
这个位置数据库还是可以在总体时间上定位出一个相对准确的位置。苹果应该对此有些解释。
The database can still place you in a general place at a general time, and Apple should probably do something to address this.
另外一个Brightkite没有解决的问题是没有一个统一的位置数据库，就是TechCrunch今天早晨提到的那种。
Another issue, and one that Brightkite has no control over, is the lack of a unified places database, as TechCrunch mentioned earlier this morning.
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