Consonants are produced by constricting or obstructing the vocal tract at some place to divert,impede,or completely shut off the flow of air in the oral cavity.By contrast,a vowel is produced without such obstruction so no turbulence or a total stopping of the air can be perceived. 辅音的特点 辅音是气流从肺中压出后受各部门的发音 器官如唇、齿、舌、咽喉的阻碍的结果。Consonants are produced by constricting or obstructing the vocal tract at some place to divert, impede, or completely shut off the flow of air in the oral cavity. By contrast, a vowel is produced without such obstruction so no turbulence or a total stopping of the air can be perceived. 辅音的特点 辅音是气流从肺中压出后受各部门的发音 器官如唇、齿、舌、咽喉的阻碍的结果