fricative consonants,

fricatives 摩擦音) [f] [v] [s] [z] [ð] [f]
声带震动的爆破的齿龈音 // voiced fricative postalvelolar sound.
是无声无咝声齿摩擦音(英语:voicelessdentalnon-sibilantfricative)
2021教师资格证笔试备考英语语音的分类
chinese (mandarin) phonetics initials (consonants)finals (a