XML文档包含层次结构，并且有其固有的顺序。
XML documents contain hierarchies and possess an inherent order.
这个层次的回答包含了演讲的一些相关信息，但是它的语言明显不太通顺。
A response at this level contains some relevant information from the lecture, but is marked by significant language difficulties.
EGL包含一定层次的说明性规范，帮助减少重复且容易出错的编码。
EGL includes a certain level of declarative specifications to help reduce repetitive and error-prone coding.
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