Any required or optional service data inputs and outputs.
任何被要求或者可选的服务数据输入和输出。
It is an optional service that can be used to store session state data outside of the Web application memory space.
有一项可选服务可将会话状态数据保存在web应用程序内存之外。
An example of an optional service is the policy service because not all repositories can (or need to) express their administration policies in a general way.
可选服务以策略服务为例，因为一般来说不是所有的知识库能够(或者需要)展示其管理策略。
An example of an optional service is the policy service because not all repositories can (or need to) express their administration policies in a general way.
可选服务以策略服务为例，因为一般来说不是所有的知识库能够(或者需要)展示其管理策略。
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