ventilator
noun [ C ] uk/ˈven.tɪ.leɪ.tər/ us/ˈven.t̬əl.eɪ.ɚ/
通风口；通风设备
an opening or a device that allows fresh air to come into a closed space
人工呼吸器
a machine that helps people breathe correctly by allowing air to flow in and out of their lungs
He was brought into intensive care shortly after the accident and immediately put on a ventilator. 车祸发生后不久，他就被送进了重症监护病房，并且马上戴上了人工呼吸器。