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正如您可以看到的，这段代码非常复杂，它创建了一些代码来遍历XML文档，从而检索所需要的信息。
As you can see, it's relatively complicated to create the code that walks the XML document to retrieve the information that you need.
一个脚本不仅能够检索文档信息，在文档不完全时，还能给出建议。
A script can not only retrieve document information but also advise when documentation is incomplete.
如果财务部仅仅想给顾客18273发送帐单(该标识在财务软件中)，则只需要检索订单文档以获取所需信息。
If your accounting department just wants to send a bill to customer 18273 (and that ID is in your accounting software), it needs to retrieve only the order document to obtain the information it needs.
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