但是没有自己的文字。
只有自己的语言，但没有自己的文字。
We have our own language, but not a written language of our own.
南美的印加人没有表述自己语言的文字。
The Incas of South America never developed a way of writing their language.
南美的印加人没有表述自己语言的文字。
The Incas of South America never developed a way of writing their language.
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