perhaps they are not speaking "语言". They are just making

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送交者: yell 于 2008-03-25, 09:57:45:

回答: 为什么全世界的狗狗都讲一种语言? 他们为什么没进化? ^_^ 由 ax 于 2008-03-24, 16:56:14:

the similar noises => no selection pressure to ""进化" such noisess?


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