OK now, more importantly, had we been there in the '40s and '50s, '60s, had we seen this disease, had we understood exactly what was going on with it, how might that have changed and completely transformed the nature of the way this pandemic moved?
现在，更重要的是， 我们生活在20世纪40年代，50年代，还是60年代， 我们看到这个疾病了吗，我们明白 这个病到底是怎么回事吗？我们明白，它是怎样改变， 而且完全改变了流行性疾病的本质吗？