The people at the United States Postal Service have implemented a solid and very useful Web Service.

美国邮政管理局的人员实现了一个可靠并且非常有用的Web services。

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The integration of sensors with social networks will lead to real-time data and more useful web apps.

社会化网络与移动设备传感器结合，将会出现什么样的应用？

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Although app Engine limits the functionality available to your application, it supports the construction of useful Web services.

虽然App Engine限制了应用程序可用的功能，但是它支持有用的Web服务的构造。

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Other suppliers go to absurd lengths to maintain the facade of a useful Web site while placating retailers.

FORBES: Not.coms

Its five-way joystick and 2.1-inch screen are useful for web browsing.

FORBES: A Nokia Smartphone With An Edge

This web site - located at www.firstgov.gov - provides a single online information portal that connects Americans with information and resources to one of the largest and most useful collection of web pages in the world.

WHITEHOUSE: Statement of The Honorable Sally Katzen