translation.en: We tried to inject chemicals into the knee spaces of animals to try to reverse cartilage degeneration, and to put a short summary on a very long and painful process, essentially it came to naught.
translation.zh: 我们尝试了将一些化学成分 注入动物的关节囊 尝试反转退化现象， 经过了痛苦而漫长的尝试， 结果简单概括就是， 基本上没有任何效果。