To create a trace between features and use cases, open the use cases Traced to features view in the use cases folder.

要在特性和用例之间创建跟踪，请打开use Cases文件夹中的Use Cases Traced to Features视图。

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The cameras take a photo every time you open the fridge to show what's being used and what you are about to use up.

每次你打开冰箱的时候，这些相机都会拍下照片，显示冰箱里已经用过的东西和即将用完的东西。

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Doctors can also use catheters to open blocked arteries that supply blood to the heart.

VOA: special.2010.02.17

He wanted to fight in the open, where he could use his artillery.

VOA: special.2009.11.26

Then rinse under running water. In a public restroom, if you dry your hands with a paper towel, you should also use the towel to shut off the water and open the door.

VOA: special.2010.09.29

As early as 2001, UNESCO and the European Space Agency initiated the Open Initiative on the Use of Space Technologies to Support the World Heritage Convention and set up a large network of UNESCO space partners.

UNESCO: Detailview | United Nations Educational, Scientific and Cultural Organization

"There was hope amongst a lot of people that the Obama administration would be more open to the medicinal use of marijuana and it initially made some announcements in that direction, but then it later reversed its policy, " he says.

BBC: US cannabis vote reignites call to legalise drugs

More advanced users can use the squiggle line to expose all open apps, and then use the gaze-and-delete trick to select one.

ENGADGET: Hands-on with Tobii REX, a peripheral that brings eye-tracking to any Windows 8 PC (video)