XML是基于Standard GeneralizedMarkupLanguage（标准通用标记语言，SGML）的，后者由ISO 8879:1986 [ISO 标准]定义。
XML is based on Standard Generalized Markup Language (SGML), defined in ISO 8879:1986 [ISO Standard].
DocBook最初是一种用于编写图书和文档的流行的标准通用标记语言(Standard Generalized Markup Language,sgml)格式，尤其针对技术性图书和文档。
DocBook was originally a popular Standard Generalized Markup Language (SGML) format for authoring books and documentation, especially those of a more technical nature.
作家和技术人员例行公事般地创作出以 SGML（标准通用标记语言）格式表示的大量产品说明书、规章需求和计算机系统文档。
Writers and technicians routinely produce voluminous product specifications, regulatory requirements, and computer system documentation in SGML (Standard Generalized Markup Language) format.
顺序是这样的，当RAM很昂贵时SGML（Standard Generalized Markup Language 标准通用标记语言）出现了，因为文件总是比物理RAM存储器大很多，所以它必需是流处理方式：内存中处理的价格高的惊人。
Here is the sequence: SGML comes out when RAM is expensive, and it must be stream processed since documents are so much bigger than physical RAM: in-memory implementations are prohibitive.
它是标准通用标记语言(SGML)的一个子集，采用文本方式应用和描述信息的树状结构。
It is a subset of Standard Generalized Markup Language (SGML); it offers a text-based means to apply and describe a tree-based structure to information.
标准通用置标语言(SGML)是用来标记文件逻辑结构的语言。
Standard Generalized Markup Language (SGML) is used to mark the logic structure of text.
XML实际上是一个简单和易于使用的标准通用标记语言（SGML）的子集，这是创建一个标准的文档结构。
XML is actually a simpler and easier-to-use subset of the Standard Generalized Markup Language (SGML), which is the standard to create a document structure.
XML实际上是一个简单和易于使用的标准通用标记语言（SGML）的子集，这是创建一个标准的文档结构。
XML is actually a simpler and easier-to-use subset of the Standard Generalized Markup Language (SGML), which is the standard to create a document structure.
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