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Information retrieval, or simply "search" for short, is now a fairly fundamental field of computer science.

信息检索或简称为“搜索”，目前是计算机科学中的一个非常重要的领域。

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Namespaces do a lot to ensure that the XML conforms to an expected schema but add complexity for retrieval of information.

名称空间做了很多工作来确保XML符合预期的模式，但也增加了信息检索的复杂性。

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They associate that information with retrieval cues, so that they can trigger the information again.

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Amit finished off by teasing us with his vision of where information retrieval should be headed.

ENGADGET: Google's Amit Singhal tells us about the dreams search engines are made of

Background sound and chatter does interfere with the system making the retrieval of accurate information difficult.

BBC: NEWS | Technology | Google listens to screen routine