Content and attribute declarations cannot depend on attributes or element context (many XML languages use that, but their DTDs have to "allow too much").

内容和属性声明不能依靠属性或元素上下文(许多xml语言用到这一点，但它们的DTD必须“允许过多东西”)。

youdao

Content and attribute declarations cannot depend on attributes or element context (many XML languages use that, but their DTDs have to "allow too much").

内容和属性声明不能依靠属性或元素上下文(许多xml语言用到这一点，但它们的DTD必须“允许过多东西”)。

youdao