absence of uvula

例句：

1. 1.The absence of a voice can be a sign of illness.
   没有声音可能是疾病的征兆。
2. 2. He was so excited that he couldn't speak at first.
   他太激动了，一开始说不出话来。
3. 3. The doctor advised him to rest and avoid loud noises for the time being.
   医生建议他暂时休息，避免大声噪音。