Mixed content -- the ability to mix child elements and plain text in XML elements -- has spotty support in some schema languages, which is unfortunate since it is one of the defining features of XML.
混合内容 - 混合子元素和 XML 元素中纯文本的能力 - 在一些模式语言中得到的支持不尽相同，由于这是 XML 的定义特性之一，从而造成此缺憾。
The standard is now formally known as XML Schema Definition Language or XSD for short.
该标准现在的正式名称为XML模式定义语言或者简称为xsd。
It is written in the XML Schema definition language to describe the structure and constrain the content of XML documents.
它是使用XML模式定义语言编写的，描述了XML文档的内容结构和约束。
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