ビギナーさん
2020-01-31 17:10
日本語訳を教えてくれませんか？
One argument is that the appearance of human language is something so different that it marks a clear break with what went before. The other is that language, like other behaviors, has precursors and can be seen to have evolved from earlier kinds of communication.
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2020-01-31 17:10:41