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  1. Oxford Dictionary

    Eustachian tube

    • IPA[juːˌsteɪʃ(ə)n ˈtjuːb]

    英式

    • n.
      a narrow passage leading from the pharynx to the cavity of the middle ear, permitting the equalization of pressure on each side of the eardrum.

    • noun: Eustachian tube, plural noun: Eustachian tubes

    • 更多解釋

    Eustachian tube

    • IPA[yo͞oˈstāSH(ē)ən ˌto͞ob]

    美式

    • n.
      a narrow passage leading from the pharynx to the cavity of the middle ear, permitting the ...

    Oxford American Dictionary