它是怎样产生的：有很多关于人类文明是怎样的理论——就我们所知道的世界可能已经结束。
How it could happen: There are any number of theories for how human civilization — the world as we know it — might end.
阐述了欧几里德《几何原本》中译本的产生、基本内容结构及其在数字与人类文明史上的重要贡献。
This paper expounds the production of the Chinese version of Euclid's Geometry, its basic content structure and important contribution to Mathematics and the human civilized history.
我们在前一章讨论过，人类终究不免一死，在动物界占一席之地，以及由此对人类文明特质产生的影响。
In the preceding chapter, we have seen man's mortal heritage, the part he shares with the animal world, and its consequences on the character of human civilization.
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