Related: "Siberian, Native American Languages Linked—A First."
相关信息：”西伯利亚语，与美国土著语言相关的-AFirst
Many American place names have their roots in Native American languages.
美国的许多地名源于美洲原住民的语言。
Already almost all Californian Native American languages are in danger of extinction.
几乎所有加州当地的美洲土语已有消失之虞。
Before Europeans arrived in North America there were over 300 Native American languages.
在欧洲人到达北美之前，那里有300多种美洲原住民的语言。
Native American languages have added many words to English, though the meaning of a word has often been changed.
美洲原住民的语言为英语增加了许多词汇，但词义往往有所变化。
There are two other kinds of research that have thrown some light on the origins of the Native American population; they involve the study of teeth and of languages.
还有另外两种研究对印第安人的起源提供了一些线索；它们包括对牙齿和语言的研究。
There are two other kinds of research that have thrown some light on the origins of the Native American population; they involve the study of teeth and of languages.
还有另外两种研究对印第安人的起源提供了一些线索；它们包括对牙齿和语言的研究。
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