要说明这个问题，先要说一说说明人们认识事物的一个假设：人们对事物的认识，是发生在对类层级结构 (type hierarchy structure)的把握之中的。
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In accordance with the type-hierarchy structure, Chinese character is a system and can be viewed as TyH (e).
按照类层级结构理论,汉字可以被视为一个类层级结构系统。
参考来源 - 自主—依存框架下汉字字谜生成机制探究·2,447,543篇论文数据，部分数据来源于NoteExpress
唯一的例外是scala类层级结构中的根，Any，没有父类。
The sole exception is the root of the Scala class hierarchy, Any, which has no parent.
该页面上没有模板特定地注册到Position，这样您将需要查看类层级结构了。
No template on this page is specifically registered to Position , so you'll need to start by looking up the class hierarchy.
类可以由那些拥有部件的类组成，允许您按照层级结构将一个系统逐步分解成任意的层次。
Classes can be composed of classes which themselves have parts, allowing you to hierarchically decompose a system to any arbitrary level.
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