external it entity

基本解释

The Mirror Image takes our external entity and turns it into part of the system.
镜像映象模式取得外部实体，然后将它转变成系统的一部分。
When the module wishes to provide the ability for another entity (external service or other module) to invoke a business function it exports this capability.
当模块需要向另一个实体（外部服务或其他模块）提供功能来调用业务功能时，它将导出该功能。
An XML file that is identified by an external entity can only contain a document fragment: It cannot contain a DOCTYPE declaration or a stand-alone XML declaration.
由外部实体标识的 XML 文件仅能包含文档片段：它不能包含 DOCTYPE 声名或独立的 XML 声明。