正文

VOA慢速英语:中国首个新冠疫苗获批国内上市

2021-01-01来源:和谐英语

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Words in This Story

essential – adj. very important and necessary

dose – n. the amount of a medicine or vaccine that is needed to be effective against disease

adverse – adj. having a negative or harmful effect on something

refrigerator – n. a device or room that is used to keep things cold

affordable – adj. not costly

capacity – n. the total amount of something that can be contained or produced