声音嘶哑是教师经常出现的一种症状,主要是由于喉内声带发生病变所造成的。声带有两条,左右各一,受气流振动后就能发出基本的声音。声带很薄,因此能够灵敏地活动。如果声带变厚了,或者上面长了小东西,振动就会受到影响,发出的声音就不正常。如果一个老师从早到晚不停地讲课,声带的负担过重,就会产生组织反应,如充血。声带充血后的振动就不太好,这样,声音就会嘶哑。要是经过一段时间休息,如晚上睡 Hoarseness is a common symptom of the teacher, mainly due to lesions in the vocal cords in the throat. There are two sounds, one on the left and one on the right, and the basic sound can be emitted when the air flow is vibrated. The vocal cords are thin so they can move sensitively. If the vocal cords become thicker or have small objects above them, the vibrations will be affected and the sound will not be normal. If a teacher keeps teaching from morning till night and the vocal cords are overburdened, it will produce organizational reactions such as congestion. The vibration of the vocal cords after congested is not so good, so that the sound will be hoarse. If you rest after a period of time, such as at night