ascending degeneration

例句：

1. 1. The diseaseis characterized by an ascending degenerationof the immune system.
   这种疾病的特点是免疫系统逐渐退化。
2. 2. Ascending degeneration can leadto irreversible damage in the brain.
   上升的退化可能导致大脑不可逆的损伤。
3. 3. The study found that certain environmental factorscan cause ascending degeneration in thebody.
   研究发现某些环境因素会导致身体发生上升的退化。