It proposes a simple process in which one can assign an index to any piece of data, based on the core UDEF vocabulary and imported vocabularies.

它提出了一个简单流程。在流程中，人们可以给任意数据赋予一个索引，索引是基于核心udef词汇及导入词汇定义的。

youdao

I would recommend that someone developing XML vocabularies for use by speakers of some other language craft a vocabulary based on that language, to make working in it easier for their users.

我建议为说其他语言的用户开发xml词汇表的人根据这些语言起草一份词汇表，使XML更便于用户使用。

youdao

W3C XML Schema (WXS), a grammar-based XML schema language, is used to define and limit XML vocabularies.

W3C XML Schema (WXS) 是一种基于语法的 XML 模式语言，用于定义和限制 XML 词汇表。

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