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VOA慢速英语:俄罗斯快速批准疫苗有人欢喜有人忧

2020-08-13来源:和谐英语

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Words in This Story

clinical –adj. related to medical work that is done on real patients

rigorous –adj. very strict and demanding

assessment –n. the act of making a judgement about something

efficacy –n. the power to produce the desired result or effect