In both environments, you use a unique technology-specific, XML-based grammar to lay out and create the user interface.

在这两种环境中，都使用独特的基于XML的语法来布置和创建用户界面。

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We will now showcase specific abilities of the Parse: : RecDescent grammar by adding on to the UI features from a simple event loop and a simple user interface.

现在，通过在简单事件循环和简单用户界面的UI功能基础上再增加一些功能，我们将具体展示Parse： RecDescent文法所具有的特定能力。

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Generative grammar 's concern of lexical meaning and syntactical interface is comprised of three stages.

生成语法对词汇语义与句法界面的关注大致可以分为三个阶段。

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