trachea [trəˈkiːə, ˈtreɪkɪə] (pl. tracheae -ˈkiːiː 或 tracheas)
(Anatomy)a large membranous tube reinforced by rings of cartilage, extending from the larynx to the bronchial tubes and conveying air to and from the lungs; the windpipe (剖)气管 ■(Entomology)each of a number of fine chitinous tubes in the body of an insect, conveying air direct to the tissues (昆)气管 ■(Botany)any duct or vessel in a plant, providing support and conveying water and salts (植)导管