Using XQuery to extract information from the XML parameters or variables

使用 XQuery 从 XML 参数或变量中提取信息

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A client can poll a server, using a request - reply protocol to extract information.

客户端可以通过请求-应答协议轮询服务器，以获得信息。

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But how do we extract information from existing social networks to improve public health?

但是我们如何从已有的社交网络中提取信息来提升公共健康水平呢？

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For years,the Central Intelligence Agency stood at the forefront of U.S.efforts to extract information from terror suspects in the post-9/11 era.

VOA: standard.2009.08.24

Also, excessive "screen scraping, " where computers ping an airline website repeatedly to extract information, strains the airline's website, American said.

WSJ: Two Airlines Battle Mileage-Tracking Websites

Metatags will make it easier to extract information from a page to suit a particular use, or the limitations of a particular device.

ECONOMIST: The future: Tomorrow’s Internet | The

Terahertz light - which lies between infrared light like that used by remote controls and the microwaves in the appliance of the same name - has become popular in scanning technology at airports and museums' back rooms because it can extract information without risk of damage.

BBC: Terahertz scanner reveals hidden fresco at Louvre