Since a service provider can do its work by requesting other services, you can use a layered composition of services for your design.

由于服务提供者能够通过请求其他服务来完成自己的工作，在设计上就可以使用服务的分层结构。

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It is my claim that having versioned services and schemas based on compatible, federated information models will enable progressive composition of services.

我认为，拥有受版本管理、基于兼容和联邦信息模型的服务与模式将促进服务的动态组合。

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Composition of services to fulfill a service request.

组合服务以满足某个服务请求。

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"The composition of our services revenue model is evolving, and you will hear more about these services as they are introduced, " Mr. Heins said.

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