慢速英语:世卫组织对新冠药物试验结果表示欢迎

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mortality - n. the number of deaths in a particular time or place

ventilator - n. a medical device for helping a person to breathe

access - n. a way of being able to use or get something

convincing - adj. causing someone to believe that something is true or certain

alarmed - adj. worried or frightened