Aging is basically a process that happens to inanimate objects like cars, and it also happens to us, despite the fact that we have a lot of clever self-repair mechanisms, because those self-repair mechanisms are not perfect.
老龄化基本上是一个过程，发生在无生命的物体如汽车， 也发生在人类的身上， 尽管我们的身体有很多聪明的自我修复机制， 因为这些自我修复机制还不完善[我们还是会老化]。