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VOA慢速英语:新冠疫苗的救援正在赶来

Source: 恒星英语学习网    2020-11-21   English BBS   Favorite  
Words in This Story

authorization –n. official permission to do something

regulatory –adj. concerning making officials rules about activity in a field such as medicine or business

Phase 3 –n. the third level of testing a vaccine candidate which involves thousands of people

adequate –adj. enough for some need or requirement

alternative –n. an additional choice to one that exists


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