Researchers say the avatar world at large grew more than twentyfold between 2006 to 2009 and has now reached about 15 million.

研究者称虚拟形象的数量在2006到2009年间暴增了二十倍，现在已达到1500万。

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"Fox has partnered with me to donate a chunk of the profits to environmental causes that are at the heart of the Avatar world," says the director.

福克斯公司已和我合作，计划将大部分的收益都捐献给环保项目，这也是阿凡达世界的精髓。

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Cameron's Avatar features a world of hexapodal (six-limbed) wildlife, and yet the aliens themselves are four-limbed, which from an evolutionary perspective doesn't make sense.

卡梅隆的《阿凡达》描绘出一个六足野生生物的世界，而外星人他们自己却只有4个足，根据进化的观点那是不合理的。

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"Avatar" has earned more than two billion dollars around the world, more money than any other movie in history.

VOA: special.2010.03.01

Shaker is a Facebook app for people to interact and meet in an avatar virtual world.

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Zed Drebin is an avatar in the virtual world of Second Life.

CNN: Can people actually 'own' virtual land?

Similarly, the movements of the rats were tracked in their cage and used to control an avatar projected into the VR world the human subjects experienced via a head-mounted display.

BBC: Rats and humans meet via virtual reality and robotics