声乐课上,我们常听到这样的启发:“你的咽喉有个发亮的灯泡,声音就在灯泡里”或“二胡的弓子要始终在腹部拉动,不能乱跑”等等。从唯物主义的观点来看,这些显然是不存在的。偶尔有时,老师这样讲解:声音是由声带发出的,即通过“喉腔”、“咽腔”再通过“口咽腔”之间与“鼻咽腔 Vocal lessons, we often hear the inspiration: “your throat has a light bulb, the sound is in the light bulb” or “erhu bow must always be pulled in the abdomen, can not run around” and so on. From the materialist point of view, these are obviously non-existent. Occasionally, the teacher sometimes explains that the sound is emitted by the vocal cords, that is, through the “throat cavity”, “pharynx cavity” and then through the “oropharyngeal cavity” with the "nasopharyngeal cavity