VOA慢速英语:新冠疫苗竞赛可能会让一些国家落后

pandemic - n. an occurrence in which a disease spreads very quickly and affects large number of people throughout the world

undergo - v. to experience

dose - n. the amount of medicine

queue - n. a line of people who are waiting for something

imperative - n. a command or rule that is very important

access - n. a way of being able to get something

global - adj. involving the entire world

intellectual property - n. an idea, invention, or process that comes from a person's mind

rely - v. to depend on, truest or believe

income - n. money that is earned