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文件名称:进交流群加徽普通话韵母教学.pdf
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更新时间:2025-09-09
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Thereare39Mandarinfinals,whichcanbedividedintosinglevowel,complexvowel,ansal

vowelaccordingtothestructure;themouthshapeofthevowelcanbedividedintoopenmouth,thigh

teeth,thighjointmouth,andthighmouth,whichisreferred