在我们继续之前，我要特别提一下，术语解析树和抽象语法树(或ast)描述了非常相似的语法结构。

I'll note before we go any further that the terms parse tree and abstract syntax tree (or AST) describe very similar grammatical structures.

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主要分析了抽象语法树(ast)，讨论了磁盘文件的结构及ast的写入和复原技术。

With the emphasis on the abstraCt syntax tree (AST), the paper also discusses the structure of a disk file as well as the functions designed for saving and recovering the AST.

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给出解析抽象语法树所使用的词法规则和语法规则，提出了解析gcc抽象语法树的方法。

Lexical rules and syntax rules used for parsing syntax trees are given, and a method for parsing GCC is proposed.

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给出解析抽象语法树所使用的词法规则和语法规则，提出了解析gcc抽象语法树的方法。

Lexical rules and syntax rules used for parsing syntax trees are given, and a method for parsing GCC is proposed.

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