慢速英语:新冠疫苗启动大规模临床试验 美国卫生专家出席参议院听证会
日期:2020-09-24
Words in This Story
cautiously –adv. careful about avoiding danger or risk
optimistic –adj. having or showing hope for the future: expecting good things to happen
standard –n. a level of quality, achievement, etc., that is considered acceptable or desirable
cutting corners –idiom to save money or time by not following the correct procedures or rules for doing something
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