This was the first Summit of the Americas to be held in a Caribbean nation, and was notable for a virtual absence of protesters.

VOA: standard.2009.04.19

In the meantime the Eiffel Tower is a wonderful way of showing the degree to which the vertical axis is virtual.

与此同时，埃菲尔铁塔,很好地向大家展示了,竖轴在何种程度上是虚拟的。

耶鲁公开课 - 文学理论导论课程节选

They provide a virtual education in statecraft in how to negotiate affairs in precisely the way Aristotle would have us do.

他们提供权术的实质教育,教导我们如何谈判,精确的如同亚里士多德,希望我们所能达致的程度。

耶鲁公开课 - 政治哲学导论课程节选

Superscape are well known for their innovative 3D virtual reality software - in the past, they have produced 3D shopping malls, a virtual medieval garden and even a virtual graveyard.

BBC: Virtual doctor trains patients in 3D

Since drug molecules can also be represented by computer models, it will eventually be possible to throw a huge range of virtual compounds at a virtual heart to see which, if any, have the desired effect.

ECONOMIST: Model behaviour

"This could mean buying a virtual gift for a potential love interest, buying a power-up to defeat your old classmate in a friendly competition, or buying a nice accessory for your virtual home, " Smith said.

CNN: In virtual world, China consumers best the U.S.