separating the teeth from the gums.) Holding the tongue rigidly in this position, you should then pronounce one of the vowels a, o or u, consciously dropping the
参数|magazine=与模板{{cite news}}不匹配(建议改用{{cite magazine}}或|newspaper=) (帮助) Cohen, M. L. Kuoni Travel Holding Ltd.. 《 International Directory of Company Histories 》. [2019-11-28]