This is known as a composite service.
这称为组合服务。
Both can support the composite service pattern.
二者都支持组合服务模式。
A composite service, in this case can be implemented as shown in Figure 2.
在这种情况下，组合服务可以按照图2中所示加以实现。
For example, can the new service you're building be a composite of existing services?
例如，正在构建的新服务是否可通过对现有服务进行组合得到？
When multiple composite applications use a service, who is responsible for that service?
当多个组合服务使用一个服务时，谁负责此服务？
When multiple composite applications use a service, who is responsible for that service?
当多个组合服务使用一个服务时，谁负责此服务？
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