VOA慢速英语:志愿者出现不明原因疾病,这家新冠疫苗试验被叫停!

routine –n. a regular way of doing things, something that is usual

potentially –adv. something that could be, a possibility

foremost –adj. most important

clinical –adj. related to work done on real patients

reviewed –v. looking again at information or studies to make sure they are correct

doses –n. the amount of a medicine or vaccine needed to produce the correct result

inflammatory –adj. causing swelling or inflammation of tissue