在文章的稍后部分中讨论变量、相关集和每种类型的处理程序时，我们还会提到范围活动。
We'll revisit scope activities when we discuss variables, correlation sets and each type of handler later in the article.
这些语法在识别引擎中是活动的，它们定义当对音频进行了解码和分析后该引擎返回给应用程序的词集。
These grammars are active in the recognition engine and define the set of words the engine returns to the application (the voice browser) when the audio is decoded and analyzed.
范围活动允许您定义本地变量，本地相关集和各种处理程序。
A scope activity lets you define local variables, local correlation sets, and various handlers.
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