ventilator cowl

例句：

1. 1. The patient needs a ventilator to help him breathe.
   病人需要一台呼吸机来帮助他呼吸。
2. 2.The ventilator is an essential piece of equipment in the operating room.
   呼吸机是手术室中必不可少的设备。
3. 3. The ventilator was used to help the patient with his breathing difficulties.
   呼吸机被用来帮助患者解决呼吸困难的问题。