The internally-motivated change and contact-induced change are two basic types of language change.

语言演变有“内部因素导致的演变”和“语言接触引发的演变”两种基本类型。

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The internally-motivated change and contact-induced change are two basic types of language change.

语言演变有“内部因素导致的演变”和“语言接触引发的演变”两种基本类型。

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