章然，读音为zhāng rán，汉语词语，意思是指明显。
正如我在第4章中所解释的那样，情感表达是自然而然的；即使在我们不想表现出来的时候，它们也会开始表露。
As I explained in chapter 4, emotional expressions are involuntary; they begin to appear even when we don't want them to.
第四章讨论了序贯指数模型的极大似然估计的强相合性和渐近正态性，并进行了证明。
In Chapter 4, we discuss and prove the consistency and asymptotic normality of maximum likelihood estimate to the exponential models.
十章虽内容有别，繁简不同，然前后相应，密不可分。
The ten chapters explain multifarious contents but are contextual corresponding and structural complete.
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