One can stop spread of disease through a community without being 100% effective in each person who gets the vaccine.

疫苗能够遏制疾病在整个社区中传播,虽然对于每个人来说它并非百分之百有效

耶鲁公开课 - 生物医学工程探索课程节选

Because it was precisely because of this one world, run by the Romans and maintained by the Romans, that allowed the spread of Christianity, to a great extent, both ideologically and thought-wise, as well as simply physically.

因为正是由罗马人统治维持的，这个统一的世界，给予基督教在大范围面积内广为传播的机会，不仅是在意识形态和智慧方面，还有物质条件方面。

耶鲁公开课 - 新约课程节选

Anytime there's a risk that hits one person or one country the financial markets would spread it out over everybody and it gets very small.

如果有风险袭击一个人或者一个国家,金融市场就会将风险分摊到所有人身上,风险就变得微乎其微。

耶鲁公开课 - 金融市场课程节选

So how are we to account for the diversification of languages, the spread of different ethnic linguistic groups throughout the lands of the earth if we all come from one common creative moment, one common ancestor?

所以，如果我们都起源于同一个时刻，来源于,同一个祖先，那又要怎样解释语言的多样性，怎样解释,使用不同语言的族群遍布地球上的所有土地,这一现象呢？

耶鲁公开课 - 旧约导论课程节选

I want to end this premise idea by talking a little bit about a person for whom, one of the chief purpose in life was to spread happiness-- Mahatma Gandhi. This is a story about him.

我想以介绍一位,一生致力于，传播快乐的人来结论这个前提-,圣雄甘地，这是关于他的一个故事。

哈佛公开课 - 幸福课课程节选

As we'll see in section today, a vaccine does not have to be totally perfect in order to prevent transmission of a disease, because when a disease enters a community its spread from one person to another.

有如我们今天看到的,疫苗不一定非要,绝对完美地阻止疾病的传播,因为当疾病侵入一个社区后,会在人群间传播

耶鲁公开课 - 生物医学工程探索课程节选

The idea is that if you spread risks they don't disappear, they're still there, but they're spread out over many people and the impact on any one person is reduced.

这种观念就是说如果你把风险分散...,风险仍然存在,并没有消失,但如果风险分散到许多人身上,那每一个人受到风险的冲击就会减少

耶鲁公开课 - 金融市场课程节选