音位变体就是音位的语音变异。
音素、音位和音位变体有什么区别？
What are the differences among phone, phoneme and allophone?
音位变体：同一个音素的任何不同形式。
音位作为语言中最基本和抽象的语音单位，通常以音位变体的形式出现。
Phonemes, as basic and abstract units in a language, are systematic units to distinguish sounds and meanings.
在不同的语音环境中能够代表同一个音位的不同音素叫作音位的音位变体。
Allophone: The different phones which can represent a phoneme in different phonetic environments are called the allophones of that phoneme.
在不同的语音环境中能够代表同一个音位的不同音素叫作音位的音位变体。
Allophone: The different phones which can represent a phoneme in different phonetic environments are called the allophones of that phoneme.
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