美国夏威夷大学的纳米技术专家日前制造出世界上体积最小的刷子，他们说这种刷子的刷毛只有一根头发丝的千分之一那么细。

University of Hawaii nanotechnology experts have invented the world's smallest brush - a device boasting bristles a thousand times finer than a strand of human hair.

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科学家使用该理论追踪我们的早期宇宙，发现宇宙开始点拥有一个最小的体积，但是并不是零，一个最大的能量但不是无穷大。

Scientists using this theory to trace our universe backward in time have found that its beginning point had a minimum volume that is not zero and a maximum energy that is not infinite.

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对北极海冰的检测表明，今年海冰面积下降到记录以来倒数第二，其体积则已经减少到有记录以来最小。

Measures of Arctic sea ice this year show its area is the second lowest on record, and its volume is the lowest.

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In other words, if we don't have to worry about entropy or volume equilibrium is achieved when energy is at a minimum.

换句话说，如果我们不担心熵,和体积的平衡,那么能量就得是最小的。

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