Assimilation: a process by which one sound takes on some or all the characteristics of a neighbouring sound. It includes nasalization, dentalization and velarization.
同化：指一个音具有了邻音的一部分或者全部特征这一过程。包括鼻化、齿化和腭化。
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NASALIZATION, DENTALIZATION, AND VELARIZATION are all instances of ASSIMILATION, a process by which one sound takes on some or all the characteristics of a neighbouring sound.