導管 angolul

catheter [catheters]▼(small tube inserted into a body cavity)
noun
[UK: ˈkæ.θɪ.tə(r)] [US: ˈkæ.θə.tər]

duct [ducts]▼(pipe, tube or canal which carries air or liquid from one place to another)
noun
[UK: dʌkt] [US: ˈdəkt]