Architecture is a three-dimensional form.

建筑是三维形式的。

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It may take either a three-dimensional form, as in games or virtual worlds, or a two-dimensional form as an icon in Internet forums and other online communities.

这个头像可以是网络游戏或者虚拟世界里三维立体的图像，也可以是网络论坛或社区里常用的二维平面图像。

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The experimental results show that the method can easily generate realistic three-dimensional form of fractal trees.

实验结果表明，该方法可以比较方便地生成形态逼真的三维分形树。

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For instance, the ultra-thin layers of graphene (a two-dimensional form of graphite) are formed by injecting liquid solutions containing carbon and silicon into an extremely hot, ionised gas (plasma) of argon.

ECONOMIST: MONITOR

Yet he also absorbed the daring new techniques that were emerging at the time, illustrated here by the work of Masaccio and Uccello with their grasp of three- dimensional form and the rules of perspective.

ECONOMIST: A rare chance to see the works of a 15th-century master

Biologist James Watson and physicist Francis Crick realized our DNA molecules form a three-dimensional double helix in 1953.

CNN: 5 cool things DNA testing can do