短语词组短语trachea dilator 气管扩张器tubular trachea 管状气管spiracular trachea [昆]气门气管trachea hook 气管钩capillary trachea 毛细气管ventilation trachea 换气气管trachea bifurcation 气管杈trachea a 气管fenestration trachea 气管开窗术trachea cannula 气管插管 返回 trachea