地图Web站点，用于查找驾车路线。
你可以将一个地图移动和缩放，从中找到附近的大学或者咖啡馆，或者获得驾车路线。
You can pan and zoom around a map, search for a college or cafe, and get driving directions, among other tasks.
许多这样的数据库系统都是又大又复杂——试想一下要容纳用图片提供正确驾车路线所需要的全部地图信息！
Many of these database systems are large and complex — imagine holding all the map information needed to provide accurate driving directions with pictures!
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