韵腹

yùnfù

the head vowel of a final

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yun4 fu4

main vowel in diphthong

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韵腹

yùn fù

{语} the essential vowel in a compound vowel, as (a) in (iang)

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韻腹|韵腹 [yùn fù] ► main vowel in diphthong