They take this makeshift communication system developed by adults and, again, they turn it into a full-blown language, suggesting that to some extent it's part of our human nature to create languages.

他们继承了成人发展出来的临时交流系统,将这个临时交流系统,再次发展成一种成熟的语言,这表明从某种程度上来说,创造语言是我们人类本性的一部分

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