What would that actually mean for how long people of various ages today -- or equivalently, of various ages at the time that these therapies arrive -- would actually live?
那么实际上这对于现在不同年龄的人们， 或者相等地，当这些治疗方法到达时 已是不同年龄的人有什么影响呢？ 他们会活多久些呢？