You've got the flu, you've got influenza in your upper respiratory tract, your cells are making more influenza.

你就此得了流感,你得了上呼吸道流感,你的细胞正在制造更多流感病毒

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