网络空间给予人们一种感觉，好像自己的身体被从平凡的无理世界运送到一个纯粹由想象构成的世界。

The virtual space makes one feel as if one's body is transported to a world constructed purely by imagination.

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底层由运行时间最短的测试构成，可以想象的到，它们也最易于编写。

The bottom layer is made up of the shortest running tests, which, as you can imagine, are the easiest to write.

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通过使用新的分析技术，埃雷兹·李伯曼和他的同事发现，基因组片段紧密地构成了一个“分形球”（译注：想象一下由面条揉成的球），尽管基因组片段相互扭曲纠缠，但它们之间却没有节点（译注：也就是面条球里的每根面条都不相交）。

Using new analytic techniques, Erez Lieberman and colleagues found that the genome is packed into what’s called a “fractal globule”—despite being intensely twisted, the string of genes never knots.

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