allophone造句

In the middle of the night, allophone as expected downstairs.
半夜, 楼下果然传来异声.

Variations in allophone, pitch and intonation are regarded as sound variations.
语音变异指在语言交际中,话语的音位、音高和调性等语音构成的变化.

Allophone is a phonetic variant of a phoneme.
音位变体就是音位的语音变异.