I just encourage people to breathe, to practice being in touch with their breath, "Breathing in I relax, breathing out I release."

我只是鼓励人们调息，练习与呼吸建立联系，吸气，放松，呼气，释放“

普林斯顿公开课 - 人性课程节选

You breathe it in, it infects the cells of your respiratory tract, and the virus begins to reproduce, and then it spreads throughout your body.

你将之吸入,病原体感染了呼吸道细胞,病毒开始繁殖,接着传遍你的全身

耶鲁公开课 - 生物医学工程探索课程节选