就处理服务出错而言，标准的业务错误代码有助于应用程序更得心应手地使用这些服务。
Having standard business error codes helps applications consume these services easily in terms of handling the service errors.
就服务集成总线提供的功能而言，自动定义的最重要资源是消息传递引擎。
In terms of the functionality provided by a service integration bus, the most important of the resources that are automatically defined is a messaging engine.
因此，就响应时间而言，Web 服务调用比其他类型的远程过程调用的开销更大。
Therefore Web service invocation costs more in terms of response time than some other kinds of remote procedure invocation.
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