复习资料（2.3）
3、 Organs of speech
发音器官
The pharyngeal cavity 咽腔 the throat
The oral cavity 口腔the mouth
The nasal cavity 鼻腔the nose
The air stream coming from the lungs may be modified in these cavities in many ways. It may also be modified in the larynx (喉) before it reaches any of the cavities.
Lying across the glottis (声门) are the vocal cords (声带). Vibration of the vocal cords results in a quality of speech sounds called “voicing”. The speed of the vibration determines the pitch of the sound.
The tongue is the most flexible in the oral cavity.