一些服务提供者同时也是服务请求者：它们聚集其他服务提供者的功能来构造复合的更高级别的服务。
Some service providers can also be service requestors: they aggregate capabilities from other service providers to construct composite, higher-level services.
作为一个服务提供者获得高级合作伙伴的地位也许并不困难，然而，去把它延伸到业务领域却不容易。
To gain a high level partnership spirit as a service provider may not be so difficult; however, to develop it further to the business level is not an easy stuff.
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