各种标准提供了一个上下文框架，使您可以更轻松地处理信息。
An address has a number, street, city, state, and zip code. Standards provide a contextual framework that allows you to process information more easily.
一个上下文菜单提供了行动，影响特定项目或上下文框架在UI。
A contextual menu offers actions that affect a specific item or context frame in the UI.
开箱即用的实现就是。NET的线程池系统以及使用了异步上下文的框架。
Out of the box you one based on.net's thread pool system and one that USES the synchronization context framework.
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