VOA慢速英语:欧洲发出警报称新冠病毒感染急剧增加

surgery - n. performing an operation on the human body

department - n. a unit or area of an organization

pandemic - n. a contagious disease that spreads to many countries

nurse - n. one who assists a doctor

ventilator - n. a machine that helps a person breath

familiar - adj. something that is known already to someone