衰老 是 变老的 过程。它 代表了 一个人 随时间变化的 积累。在 人类中，衰老 是 身体 和 心理的 一些 变化。
Ageing (British English) or aging (American English) is the process of becoming older. It represents the accumulation of changes in a person over time. In humans, ageing is several physical and psychological changes.