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1·Perhaps the most striking sign of mobility is the fact that by the third millennium B.C., most pastoralists in this huge region spoke related languages ancestral to the modern Indo-European languages.

可能在人口流动性方面最具说服力的标志是，公元前3000年，在这片广袤的土地上大部分牧民讲的相关语言，现代印欧语系就从中发展而来。

2·We speak a decimal language because an ancestral tongue, proto-Indo-European, was decimally based.

我们说的是十进制的语言，这是因为我们的始祖语言——原始印欧语——是基于十进制的。

3·The scholars referred to that source language as Proto-Indo-European. Proto-Indo-European is a reconstructed language.

学者们把这种源语言称为原始印欧语。原始印欧语是一种重建的语言。

4·Proto-Indo-European is a reconstructed language, meaning, it is what linguists concluded a parent language of Sanskrit, Latin and Greek would have to be like.

原始印欧语是一门经过重构得出的语言，也就是说，这就是语言学家总结出梵语、拉丁语和希腊语的母系语言的样子。

5·English is belonged to the Indo-European Family.

英语属于印欧语系。

6·English and French are of the Indo-European family.

英语和法语都属于印欧语系。

7·Long enough that there was an Indo-European word for cow gwou.

这段时间很长，以至于在印欧语系里就有个对应于cow的单词gwou。

8·In fact our word lean evolved from the same Indo-European root.

事实上，我们语言中的lean也是来源同样的印欧语系。

9·The Indo-European root that likely gave us our word number was nem.

number这个词的印欧语词根可能是nem。

10·Some sources point to an Indo-European root dek meaning “to take” or “to accept.”

而另一些出处则直指一个印欧语系的词根dek，意思是“取到”或者“接受”。