该模型由物理基础结构、应用支撑平台、用户服务系统和用户应用系统四个层次构成。
The model is made of four layers, which is physical infrastructure, supported application platform, customer services system and customer application system.
“体现了实时搜索结果巨大价值的典型例子是某种危机事件”，Google产品管理总监Tom Stocky说，“用户想获得最新信息，Twitter为此服务提供了大量平台来支撑，这就是我们为什么很高兴与Twitter合作并获取这些最新信息的原因。
“The prototypical case that proves the immense value of real-time search results is some kind of crisis, ” says Tom Stocky, Google’s director of product management.
数字电视服务平台是数字电视端到端服务的基础，一套完善的电子商务系统可以为有线数字运营商服务平台提供强有力的支撑。
The service platform is the foundation of DTV end to end service, an electronic commerce system with perfect function can provide the strong support for the service platform.
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