慢速英语:美国制药商开始进行新冠抗体试验

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simultaneous - adj. happening at the same time

global - adj. involving the entire world

pandemic - n. an occurrence in which a disease spreads very quickly and affects a large number of people over a wide area

positive - adj. good or useful

review - n. examination or inspection

status - n. a current state of something

devastating - adj. causing great harm or damage