VOA慢速英语:研究称辉瑞公司疫苗对新冠病毒变种同样有效

mutate – v. to develop new physical characteristics because of a permanent change in genes.

disrupt – v. prevent something - for example a system, process of event - from continuing as usual or expected.

bind – v. to attach to something

reassure – v. comfort someone in an attempt to stop them from worrying

flu – n. a common infectious illness that causes fever and headache

code – n. the makeup of the structure of something