respiratory tract
noun [ C usually singular ] anatomy specialized uk/rɪˈspɪr.ə.tər.i ˌtrækt/ us/ˈres.pɚ.ə.tɔːr.i ˌtrækt/
呼吸道
the parts of the body that air passes through during the act of breathing, consisting of the mouth, nose, throat, and lungs
upper respiratory tract infections such as the common cold 上呼吸道感染，如普通感冒
lower respiratory tract infections such as pneumonia 下呼吸道感染，如肺炎