has part has_part anatomical structure 解剖结构 nose 鼻子 proximo-distal subdivision of respiratory tract 呼吸道的近端远端分支 upper respiratory tract 上呼吸道 The segment of the respiratory tract that starts proximally with the nose and ends distally with the cricoid cartilage, before continuing to the trachea. 呼吸道的一段，在鼻子的近端开始，并在环状软骨的远端结束，然后延伸到气管。 lower respiratory tract 下呼吸道