词典释义：
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There are two main problems linguists face when constructing these language family trees.
语言学家们在重建这些语言系谱时主要面临两大问题。
《TED-Ed》《TED教育》
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Like genealogists, modern linguists try to map this process by tracing multiple languages back as far as they can to their common ancestor, or protolanguage.
系谱学家、现代语言学家等试图重现这个过程，他们尽力追溯不同语言的共同的起源，也称为原始母语。
《TED-Ed》《TED教育》
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By systematically comparing these features and looking for regular patterns of sound changes and correspondences between languages, linguists can determine relationships, trace specific steps in their evolution and even reconstruct earlier languages with no written records.
通过系统地比较这些特征，查找读音变化的常见形式和不同语言的对应关系，语言学家能们够确定它们之间的关系，追溯它们发展演变的详细过程，甚至重建没有文字记录的早期语言。
《TED-Ed》《TED教育》
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Well, that's right, because we're a top-secret program. But I'll tell you, just because we're friends, that only last week, I rejected one of our great nation's top linguists. Knows German better than Bertolt Brecht.
这就对了，因为这是绝密项目。看在我们是朋友的份上，就在上周，我拒绝了我国最顶尖的语言家，德语讲的比布莱希特（德国诗人）还好。
《The Imitation Game》《模仿游戏》
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Many linguists have looked at language in this way.
许多语言学家就是这样看待语言的。
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These theories are now largely discredited among linguists.
这些理论现已大多受到语言学家的质疑。
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Within the profession of linguists there are, of course, fighting factions.
在语言学家内部当然也有相互斗争的派别。
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Cummings boldly experimented with this principle, and he attracted the attention of the linguists, particularly a linguist named Dell Hymes.
卡明斯大胆地试验了这一原则，他吸引了语言学家的注意，尤其是一位名叫戴尔·海姆斯的语言学家。
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Concerning the semantic formula of -men, some linguists posit that -men is a plural marker in pronouns.
关于其语义特征，一些语言学家认为“-men”在人称代词后是复数标记。