VOA慢速英语:吉利德为瑞德西韦定价每瓶390美元 5天疗程2340美元

insurance – n. an agreement in which a person makes regular payments to a company and the company promises to pay money if the person is injured or dies, or to pay money equal to the value of something such as a house or car if it is damaged, lost, or stolen

mortality – n. the death of a person, animal, etc.

pandemic – n. an occurrence in which a disease spreads very quickly and affects a large number of people over a wide area or throughout the world

public domain – n. the realm or status of property rights that belong to the community at large, are uNPRotected by copyright or patent, and are subject to appropriation by anyone