Unit 1 Articulators
基础科学

Unit 1 Articulators图片（共1张） :

        All the sounds we make when we speak are the result of muscles contracting. The muscles in the chest that we use for breathing produce the flow of air that is needed for almost all speech sounds; muscles in the larynx produce many different modifications ......（本文共 5072 字, 1 张图）     [阅读本文] >>