它们依靠它们的组成对象的equals方法来避免重复。
They rely on the equals method of their constituent objects to avoid duplicates.
组成对象的数据元素。数据成员一般应设为私有的。
The data elements that constitute an object. Data members ordinarily should be private.
XML Infoset 被用作其他几种规范的基础，这些规范试图把 XML 文档分解成一些组成对象的集合。
The XML Infoset is used as the foundation of several other specifications that try to break down XML documents into some collection of constituent objects.
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