原因很简单：模型具有自己的继承层次结构。
The reason is simple: The module has an inheritance hierarchy of its own.
在这种情况下，FEST - Swing在抛出的ComponentLookupException中包含可用的组件层次结构，从而易于发现失败的原因。
In cases like this, FEST-Swing includes the available component hierarchy in the thrown ComponentLookupException, making it easier to discover the cause of the failure.
他们只是提供了一个不同类别形容词的层次结构，(不管有没有原因)该结构在英语中基本上是有固定顺序的。
What they do have is a hierarchy of adjective classes that (for whatever reason) occurs in a more-or-less fixed order in English.
为了理解这其中的原因，我们需要稍微靠近一点看一看，到底是需要用什么来支持方法和域的添加操作（甚至更深入一些，修改继承的层次结构）。
To understand why, we need to look a little closer as to what exactly is necessary to support adding methods and fields (and even more advanced, changing the inheritance hierarchy).
探究推动这一势头背后的原因，经济深层次的结构之变无疑是巨大的动力。
Exploring the reasons behind this momentum, the deep structural changes in the economy is undoubtedly a great driving force.
分析了土壤侵蚀中的侵蚀、搬运、堆积的层次结构及所表现的空间尺度效应的形式、产生的机制和原因。
The multi-level structure of erosion, transportation and accumulation in a slope system and its space scale effect are very important for the soil erosion quantity evaluation.
其公司法人治理结构存在缺陷的深层次原因，是公司股权结构不合理及我国《公司法》自身存在一些缺陷。
The deeper reasons for these defects lie in the improper stock ownership structure and the drawbacks of "Corporation Law" in China.
一般认为汉语句法结构产生歧义的首要原因是句法结构层次不同和句法结构关系不同。
It is widely accepted that ambiguity in syntactic structure results from the different syntactic levels and syntactic relations in an ambiguous syntactic structure.
本文研究了新形势下农村劳动力转移动机、转移方式、供求结构和流向方面呈现的变化特征，分析了引起这些变化的深层次原因。
It takes a deep research into the new characteristic of the motive, the way, the supply and demand structure, and the direction of rural labor shift, analyzing its deep-seated causes.
但之所以存在关系属性，更重要的原因在于特定于域的对象模型通常定义为层次结构或关系图。
But relationship properties exist more importantly because domain-specific object models are typically defined as hierarchies or graphs.
但之所以存在关系属性，更重要的原因在于特定于域的对象模型通常定义为层次结构或关系图。
But relationship properties exist more importantly because domain-specific object models are typically defined as hierarchies or graphs.
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