translation.en: Nevertheless, we spend the vast majority of our energy focused on this level of the pyramid, trying to tackle things that are already completely adapted to human beings, that are going to be very very difficult to address -- as we've seen in the case of HIV.
translation.zh: 不过，我们花了大量的精力 专注于金字塔的等级 试着处理人类已经完全习惯的事情 这些解决起来会非常非常的困难， 就像我们看到的艾滋病病毒一样。