UBL有很多承诺，但是经过三年的研究之后，它仍然仅仅触及到满足电子商务需求所需要的大量文档和事务的皮毛。

UBL has a lot of promise, but after three years of work it still just scratches the surface of the range of document and transaction sets needed to cover electronic business needs.

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目前情况下，要搜索的项是通过元数据和内容共同描述的文档，但是基本用户界面与电子商务应用程序相同。

In the present case, the items being searched are documents that are described both by metadata and content, but the basic user interface is the same as in the e-commerce case.

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处理传入的XML文档的电子商务服务器需要验证这些文档，但可能无法信任另一方已经正确地设置了模式。

An electronic commerce server that processes incoming XML documents needs to validate the documents, but may not be able to trust that the other party has set the schema correctly.

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