1·Of or referring to a phonetic feature that distinguishes sounds produced at the periphery of the vocal tract, as in labial and velar consonants and back vowels.
抑音的：属于或关于一种语系特征的，可通过在元音带外缘产生的声音区别，如在唇音、软腭辅音和后元音里。
2·Labial harmony means that a non-high vowel gets rounded by the rounded vowel of the directly preceding syllable.
唇音元音和谐律是指一个不高的元音通过它前一个音节的元音变得圆滑。