The cognitive layer houses the engines that host and process the business rules, representing the business domain knowledge.

认知层包含承载和处理业务规则的引擎，并表示业务领域知识。

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Therefore, eliciting good business rules requires the knowledge of experienced employees, who are familiar with the practice of their organization and have domain expertise.

因此，得出好的业务规则需要那些富有经验的雇员们的知识，他们熟悉所在组织的实际工作，也具备相应的专业知识。

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It does not contain business rules or knowledge, but only coordinates tasks and delegates work to collaborations of domain objects in the next layer down.

它不包含业务逻辑或者业务相关的知识，而只是协调任务以及把任务委托给下一层中的一组对象。

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