Certificates give a very practical example of applied math.

证书就是应用数学的一个非常实际的例子。

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The AddOne method is not a very practical example because you would normally just receive a regular integer as a parameter and write the method as a function that returns a modified integer.

方法addone并不是一个很实际的示例，因为通常只需接收常规整数作为参数，并且作为能返回修改的整数的函数编写此方法。

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Enterprise management communication is a very practical research topic, this paper will focus on the practices of enterprise internal communication management using RIC group as an example.

企业管理沟通是一门实践性极强的研究课题，本文将以RIC集团作为研讨重点，主要着墨于企业内部沟通的管理实践。

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