Note that there are two mentions of Bill Cosby, but only one document entity.
注意，这里两次提到了BillCosby，但是只有一个文档实体。
Consider the document entity as the first item in the XML document that an XML processor encounters.
将文档实体看作是XML处理器遇到的XML文档的第一项。
The INSTANCES table in the EIDB records information about instances, and the DE_INST table maintains the links from each document entity to the corresponding instance.
EIDB 中的 INSTANCES 表记录关于实例的信息，DE_INST表维护从每个文档实体到对应的实例的链接。
In the first document, entity references are avoided through the use of CDATA; in the output document, CDATA is abandoned in favor of entity references.
第一个文档使用CDATA避免实体引用，而在输出文档中为了支持实体引用而放弃了CDATA。
In the first document, entity references are avoided through the use of CDATA; in the output document, CDATA is abandoned in favor of entity references.
第一个文档使用CDATA避免实体引用，而在输出文档中为了支持实体引用而放弃了CDATA。
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