The kinds of viruses that we get when we have colds are very good at infecting the respiratory system.

我们感冒时感染的各种感冒病毒,就非常精于感染呼吸系统

耶鲁公开课 - 生物医学工程探索课程节选

that doing meditation actually literally transforms our brain, making us more susceptible to positive emotions and more resilient in the face of painful emotions.

多少人知道，冥想能转换我们的大脑思维，使我们更容易感染到积极情绪,在面对痛苦时更坚强。

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There's something else about smiles which is going to come up, which your question raises, I think, which is going to come up in when we talk about emotional contagion and actually, some issues of morality.

其他与微笑有关的话题开始浮现了，你提出问题，我想，可能出现,当我们讨论情绪感染时，事实上，一些道德话题。

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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

So, when the right signal is received, the right T-cell finds your host cell with a foreign virus in it, the first thing that happens is that this T-cell becomes activated and it starts reproducing, making more copies of itself.

所以 当接收到正确的信号,恰当的T细胞寻觅到,感染外源病毒的细胞时,首先发生的是,T细胞被激活并开始增殖,制造更多自身拷贝

耶鲁公开课 - 生物医学工程探索课程节选