Ranvier并不使用正则表达式把公共uri重写成私有uri，而是实现责任链(chain - of - responsibility)设计模式，把资源判断任务委托给相关代码。

Instead of using regular expressions to rewrite public URIs onto private ones, Ranvier implements a chain-of-responsibility design pattern to delegate resource determination to relevant code.

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在状态分类方面我们首先给出了绕积马氏链中强常返与正则本质之间的关系和弱常返的一些性质；

On the aspect of the classification of states, first we study some properties of weak recurrence and the contact between recurrent and properly essential in skew product Markov chains.

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