tracheostomy
noun [ C or U ] medical specialized uk/træk.iˈɒst.ə.mi/ us/ˌtreɪ.kiˈɑːs.tə.mi/
气管造口术
an operation to open the trachea (= the tube that carries air from the throat to the lungs) through the front of the neck if it becomes blocked for any reason
An emergency tracheostomy may be required if something becomes caught in the trachea. 如果有什么东西堵在气管里了，就需要进行紧急气管造口术。