In this installment, I'll explain WSDL, the standard way to describe the core properties of a Web service, and introduce a couple of tools that leverage WSDL to accelerate your development process.
在这一部分中，我会解释WSDL，这个描述Web服务的核心属性的标准方法，和一些能支持wsdl来加速开发过程的工具。
In the next installment of this column we will look in more detail at the XML-RPC library that comes standard in Python 2.2.
在本专栏的下一篇文章中，我们将更详细地考察在Python 2.2中成为标准的XML - rpc库。
Some economists believe that selling goods and services to consumers on an installment plan is one of the major factors in making our high standard of living possible.
一些经济学家认为，用分期付款的方式向客户销售商品和劳务是提高人们生活水平的一个重要因素。
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