So, he intentionally inoculated his wife and two children with fluid that he got from one of his sick cows.

所以他给自己的妻子和两个孩子接种了,取自病牛的体液

耶鲁公开课 - 生物医学工程探索课程节选

But it means that we get ill less often and when we do get sick, we recover more promptly.

但这意味着我们不会常生病，就算病了，也能恢复得更快。

哈佛公开课 - 幸福课课程节选

By Spring Break he'd gotten sufficiently sick that his doctor basically said, "You can't continue in school anymore.

春假的时候，他病得十分严重,他的医生直截了当地说，“你不能再上学了。

耶鲁公开课 - 死亡课程节选

And there was a feeling that this could protect you against the disease.

这会使你觉得受到了保护不会得这种病

耶鲁公开课 - 生物医学工程探索课程节选

Because you are ill, " because you are not focusing enough on your health."

因为你病了，因为你没有注重健康“

哈佛公开课 - 幸福课课程节选

Or perhaps it means because you're sick, you can't hold your job down.

或许它意味着因为你病了，所以无法工作。

耶鲁公开课 - 死亡课程节选

do you listen to that? We are sick because we are ill.

听到吗？我们病了是因为我们在生病。

哈佛公开课 - 幸福课课程节选

Smallpox affected world history hundreds of years ago, and it was a disease that was common in Europe, but not common in the Americas until the Americas were colonized.

天花影响了几个世纪前的历史,这种病在欧洲很常见,但在美国不多见,直到美国成为殖民地

耶鲁公开课 - 生物医学工程探索课程节选

So if you got infected with smallpox, you got the disease.

如果你感染了天花病毒,就会得这种病

耶鲁公开课 - 生物医学工程探索课程节选

And that says, that's a dramatic effect on communities.

这就是说,这种病对社会产生了严重后果

耶鲁公开课 - 生物医学工程探索课程节选

There weren't people that got infected, like you can get infected with hepatitis B or tuberculosis, and not even know you're infected.

这不像人们感染了,像B型肝炎或者肺结核这类病时,都有可能不知道自己被感染了

耶鲁公开课 - 生物医学工程探索课程节选