The accuracy of a knowledge base can be maintained and improved over time by providing it with feedback -- confirmation or correction of the current categorization.

通过向知识库提供反馈（对当前的分类进行确认或纠正），知识库的精确性可以随着时间的推移得以维持和提高。

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At some later time, the book seller sends you a confirmation of dispatch of your order, along with a tracking number you can use to check the status of the delivery with the shipping company.

在随后的某个时间，书商会给你发送一个你订单的发货确认，以及一个跟踪号，你可用它来检查运货公司的运货状态。

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Candidates can logon to your profile and download renewed confirmation letters with new time.

自即日起，考生可登录报名网站重新下载打印标有新调整时间的考试确认信。

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Whether you are a do-it-yourself investor with an online brokerage account, or you get investment recommendations from a broker at a full-service brokerage firm, you'll typically receive an account statement monthly, or at least quarterly, and a trade confirmation every time you buy or sell a security.

WSJ: Why You Should Read What Your Broker Sends You

Democratic control of the Senate also meant that Bush's appointments to the government's judicial branch had a much harder time at confirmation.

CNN: Bush campaigns to return Senate control to GOP

This proposal will expire at 5:00pm (NY time) on March 28 if you fail to provide the written confirmation discussed above prior to such time.

ENGADGET: Dell bidding war afoot as Blackstone Group and Carl Icahn both make offers (update: confirmed)