A second of time, for instance, is now defined in terms of an electron transition of the cesium atom. And the meter is tied to the speed of light.

比如说，秒就是根据铯原子内部的电子跃迁时间来下的定义，而米的定义则和光速有关。

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Their standard model treats the universe as though its density did not vary from place to place but had a uniform, average value of one atom per cubic meter.

标准模型将宇宙视为一个均匀结构，密度不会随著空间位置而变化，每立方公尺平均有一个原子。

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In "shadow boxing mode" Atom mimics his coach's movements with lightning speed. He can dance too – like a 1.8-meter, 3-ton butterfly.

在“影子模仿模式”下，亚当能神速模仿教练的动作。他还会跳舞，就像一只高一米八，三吨重的蝴蝶。

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The nebulous field of nanotechnology, freighted with as much hype as legitimate promise, boils down to the process of manipulating matter on a molecular scale (a nanometer is one billionth of a meter, about ten times the width of a hydrogen atom).

FORBES: The science of small