XPP suffers from requiring more steps for parsing and writing text documents, and for working with namespaces.
XPP在语法分析和编写文本文档时需要更多步骤，并且在处理名称空间时也需要更多步骤。
Once you have an instance of XPath, you can start to configure it by changing the context, working with namespaces, and evaluating expressions.
一旦得到了XPath的实例，就可以开始通过改变上下文、处理名称空间和计算表达式来配置它。
Once you have an instance of XPath, you can start to configure it by changing the context, working with namespaces, and evaluating expressions.
一旦得到了XPath的实例，就可以开始通过改变上下文、处理名称空间和计算表达式来配置它。
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