Internet mapping services and GPS navigation systems are extraordinarily useful.

互联网地图服务和GPS导航系统非常有用。

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Each Proxy binding instance builds and maintains a directory mapping services provided by instances.

每个代理绑定实例都构建和维护一个目录，该目录负责映射由实例提供的服务。

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The ease of access to online mapping services has increased our collective reliance on understanding our world from above.

很容易得到的地图服务增加了我们从上空了解世界的依赖性。

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Companies that operate the cell phone networks like Verizon and Cingular are offering mapping services, too.

NPR: Map-Making Firms Rumored to Sell for Billions

Microsoft also declared it's making strides in so-called engagement mapping services to help advertisers gain greater insights into consumers' buying decisions online.

FORBES: Microsoft's Desperate Move

Much still needs to be improved or invented, Gates reminded his listeners, including better mapping services, data synchronization and directories of friends.

FORBES: Magazine Article