然而，笑想必是我们都乐意被传染的唯一传染病吧，不是么？

However, smile is the only infection we are all happy to be infected with, aren't we?

youdao

她说人们在工作时被传染的几率更大，因为他们与同事间的接触要更密切。

'they're more likely to catch something at work because they're coming in closer contact with their coworkers.'

youdao

她说人们在工作时被传染的几率更大，因为他们与同事间的接触要更密切。

'they're more likely to catch something at work because they're coming in closer contact with their coworkers.

youdao

If a case of polio emerged in the community, the chances that it could spread to other children or to your child were high; so, great interest in this in the early part of this century.

如果在某个社区出现一例脊髓灰质炎患儿,那么你的孩子或者更多别的孩子,被传染的几率非常高,所以 二十世纪初的科学家们,热衷于研究脊髓灰质炎

耶鲁公开课 - 生物医学工程探索课程节选

Now, the problem, or one of the challenges with clinical trials of vaccines is that you have to enroll a lot of patients into clinical trials because only a few are going to get sick in any case, only 20 out of 100,000.

现在的问题是,这也是疫苗临床试验的挑战之一,临床试验必须包括足够多的病人,毕竟只有一小部分人会被传染,十万人里面只有二十人被传染

耶鲁公开课 - 生物医学工程探索课程节选