普通话的基本发音

Product: Mandarin Basic PronunciationProducer: Jason (Graduated in U.S.A. with a Master Degree, M.Sc.) “Mandarin Basic Pronunciation” has the following features and functions: - Many people who are learning Mandarin, or people who already have certain level of learning Mandarin, always cannot speak Mandarin fluently, and cannot pronounce accur…...