This is applicable whether you are building components or services or even business process flows.
无论你构建的是组件还是服务，甚至是业务流程，这都是适用的。
Service description is a specification of information necessary to allow a potential consumer to determine whether or not the service is applicable and to facilitate the invocation.
服务描述是让一个潜在客户去决定服务是否可用，并能促进调用所需信息的规格。
State, only if it is applicable, that they will still receive all the services they usually do whether they choose to participate or not.
并且说明，（如果是合适的话）无论他们是否选择参与，他们都能和通常一样接受到所有他们所需要的治疗。
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