为这些组件创建包装外观，会隐藏遗留组件间复杂的交互细节，并提供了一个抽象，使新旧代码不致混淆。

The creation of wrapper-facades for these components hid the details of complex interactions between the legacy components, and also provided an abstraction that protected new code from legacy code.

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既然已经完成了WSDL的新版本，接下来就必须确定如何包装应用程序，以使Web服务的新旧版本可以同时存在。

Now that we have completed the new version of the WSDL we have to decide how to package the application so both the old and the new version of the Web service can exist side by side.

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