在本节中，我们要说明这两个术语的含义都很模糊，对于描述服务总线或集成层的性质没有帮助。
We show in this section that both terms are ambiguous and not helpful in describing the nature of the service bus or the integration layer.
这个领域中的一种事实标准描述语言是WSDL，创建该语言的目的是给服务的接口和实现提供一个抽象层。
A DE facto standard description language in this domain is WSDL, which was created to provide an abstraction layer around a service's interface and implementation.
语义/逻辑服务层描述一个通用业务模型，该模型定义不同种类的业务实体。
The Semantic/logical services layer describes a general purpose business model that defines different kinds of business entities.
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