cathode degeneratiaon

例句：

1. 1. The battery'sperformance has significantly degenerated over time.
   电池的性能已经随时间显著退化。
2. 2. The old car's engine is showing signs of degeneration.
   这辆旧车发动机出现了退化的迹象。
3. 3.The research on the cathode degeneration mechanism is still in its early stages.
   关于阴极退化机制的研究仍处于初级阶段。