degeneration of testis

例句：

1. 1. Thepatient's condition is consistent with testicular degeneration.
   患者的病情与睾丸退化症相符。
2. 2. This disease is characterized by testicularatrophy and decreased sperm production.
   这种疾病的特征是睾丸萎缩和精子产量减少。
3. 3. Thecause of testicular degeneration remains unclear, but it is believed to be relatedto genetic factors.
   睾丸退化症的原因尚不清楚，但据信与遗传因素有关。