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。
Most languages derive from one parent language. Mednyj Aleut has two parents.
绝大多数语言只源自一种父系语言，而MednyjAleut却有两个源头。
A systematic study revealed that many modern languages descended from a common parent language, lost to us because nothing was written down.
系统的研究显示，许多现代语言起源于一个共同的母语，但由于没有文字记载，该母语已经失传。
A systematic study revealed that many modern languages descended from a common parent language, lost to us because nothing was written down.
系统的研究显示，许多现代语言起源于一个共同的母语，但由于没有文字记载，该母语已经失传。
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