Does that mean that the place where these people live is not the polis? Is it only men?Well, we'll come back to that.

是不是意味着人民居住的地方不是城邦,而是只有人是城邦,我们将很快回到这点

耶鲁公开课 - 古希腊历史简介课程节选

Well, guess what, it turns out fish don't live everywhere in the water and they don't live very much around Greece as it turns out.

不过出乎意料,鱼在这儿也很少有,它们似乎不太喜欢生活在希腊附近

耶鲁公开课 - 古希腊历史简介课程节选

So, it's more effective because it's a live virus but it's a little bit more concerning because it's a live virus as well, in that you trust that it's attenuated but could it convert back to a virulent form or a form that caused a disease.

因此,口服疫苗更加有效,因为它是活性病毒,但又是因为这一点,人们也存有更多顾虑,当它处于减毒状态时你会信任它,但是它会不会转变回,强毒壮态或者致病状态呢

耶鲁公开课 - 生物医学工程探索课程节选