aprosopia

例句：

1. 1.He has been suffering from aprosopia for the past few months.
   他过去几个月一直患有失音症。
2. 2.The patient was diagnosed with aprosopia due to a throat infection.
   患者因喉部感染被诊断出有失音症。
3. 3.A sudden loss of voice can be caused by aprosopia, which is characterized by difficulty in producing sounds.
   突然失去声音可能是由于口吃引起的，口吃的特征是难以发出声音。