referto
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英语翻译1.Vowels referto the sounds in the production of which no articulators come very closetogether and the air-stream passes through the vocal tract without obstruction.2.Cardinal Vowels are a set of vowel qualities arbitrarilydefined,fixed a
英语翻译1.Vowelsrefertothesoundsintheproductionofwhichnoarticulatorscomeveryclosetogetherandtheair-strea