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

Adenoviruses are viruses that give upper respiratory infections, they cause colds.

腺病毒可以感染上呼吸道,引起感冒

耶鲁公开课 - 生物医学工程探索课程节选