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美国将提供阿斯利康疫苗
日期:2021-04-28
Words in This Story

dose – n. the amount of a medicine, drug, or vitamin that is taken at one time

option – n. one thing that can be chosen from a set of possibilities

priority – n. something that is very important and must be dealt with before other things

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

bowl – n. a round container that has tall, curving sides and that is used for preparing or serving foods and liquids


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