XML is a common data representation that can be used as the medium of exchange between programs that are written in different programming languages and execute different kinds of machine instructions.

XML是一种通用数据表达法。在使用不同程序语言编写的程序和执行不同的机器指令之间，可以使用XML作为交换媒介。

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In particular, SOAP formalizes the exchange of information written in XML, and WSDL describes the SOAP details in an XML vocabulary.

特别是，SOAP使xml所编写信息的交换规范化，WSDL使用XML词汇描述SOAP的细节。

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This behaviour implies that any queue on the system can be written into by publishing a message to the default direct exchange with it’s routing-key property being equal to the name of the queue.

这个特点告诉我们，在系统中，任意队列都可以和默认的direct交换器绑定在一起，只要其routing-key等于队列名字。

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Ms Relf's death led to an acrimonious written exchange between Mr Smith and the head of Ofsted, Chris Woodhead.

BBC: Complaint upheld against inspection

When the history of the relations between politicians and the press is written, one short exchange could sum up the whole Leveson Inquiry.

BBC: Parties, power and the press

In recent blog posts for The Apothecary, John Graham has written about the supposed failure of the Utah Health Exchange as a reason for conservatives to look at other models for health reform.

FORBES: Why Utah's Health Exchange is a Free-Market Model