Let's first describe the user case scenario: user Anthony is interested in receiving notifications whenever a new document is uploaded on certain subjects: programming, Linux, and fishing.

我们首先来描述用例场景：用户Anthony想在关于某些主题：编程、Linux和钓鱼的新文档被上传时收到通知。

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Taking sea target surveillance and hitting system for example, the top-level demands are described using user case diagram, class diagram, activity diagram and collaboration diagram in UML.

以海上目标监视与打击体系为例，给出利用UML中的用例图、类图、活动图、协作图对体系顶层需求进行描述的方法。

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In this case, you want to provide the user with a way to say the desired beverage.

在这种情况下，您想为用户提供一种方法来表示自己想要的饮料。

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In this case, to optimize for the best of the whole community and the whole user base and over the long term and that's important too, your long over short term.

在这个前提下,去寻求整个社会,以及所有用户的长远利益的最大化,这十分重要，我们寻求长期利益，而非眼前利益。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

In this case, I'm going to get back the answer 3 F-O-O because the user typed in F-O-O, but wait a minute, what's with this?

假若这样，我得到了答案3,因为用户输入了，等一下，用这个干吗？

哈佛公开课 - 计算机科学课程节选

There are legitimate issues with the launch of Diablo III and perfectly reasonable concerns that have surfaced over the past few weeks, but this seems to be nothing more than rumor or a case of user error.

FORBES: Blizzard Responds To Diablo 3 Linux User Complaints

In the best case the end-user actually sees the unstructured information needed to complete the analysis in the display.

FORBES: A Vision for Unifying Access to Data and Documents

The agency said it was the fifth case of a drug user in England becoming ill with anthrax, which is a severe bacterial infection.

BBC: 'Anthrax heroin' kills drug user in Kent