Based on current information retrieval tool commonly used to classify.

本文通过对目前常用的信息检索工具进行分类。

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So the search engine has become the most popular information retrieval tool.

搜索引擎随之成为人们最普遍使用的信息检索的工具。

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Can be divided into: hand literature information retrieval tools and computer information retrieval tool for the two types.

可分为：手工文献信息检索工具和计算机信息检索工具两大类型。

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When you have your final 2012 tax information, you will need to submit it. (The Department of Education will remind you via email in the spring.) You'll be able to input your information on your own or use the IRS Data Retrieval Tool, which imports data directly from your tax return, available online (at fafsa.ed.gov) starting Feb. 3.

WSJ: Don't Delay Filing Fafsa