So, these seven things were all under discussion in gerontology a long time ago and that is pretty good news, because it means that, you know, we've come a long way in biology in these 20 years, so the fact that we haven't extended this list is a pretty good indication that there's no extension to be done.
因此[因为这个理由的很大的可能性]，这七个东西，都是由老年学士很久以前就讨论过了。 这是相当好的消息，因为这意味着， 尽管我们在这二十年里对生物学有着很大的成就， 这份列表还只有七样东西是一个非常好的迹象， 因为它显示它已不可再增加了。