In other words, we have aging because it's hard work not to have aging; you need more genetic pathways, more sophistication in your genes in order to age more slowly, and that carries on being true the longer you push it out.
换句话说，我们会老化，因为没有老化的话比较难； [因为]你需要更多的遗传途径，你的基因需要变得更复杂， 以便让你老的比较慢些， 而且你越想要把老化推迟，你[的身体的进化过程]就越需要面对这些难题。