慢速英语:世卫组织称目前尚无新冠肺炎的“灵丹妙药”

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resurgence – n. a growth or increase that occurs after a period without growth or increase

symbol – n. an action, object, or event that expresses or represents a particular idea or quality

phase – n. a part or step in a process

transmission – n. the act or process by which something is spread or passed from one person or thing to another

address(ing) – v. to deal with a matter, issue or problem

pandemic – n. an occurrence in which a disease spreads very quickly and affects a large number of people over a wide area or throughout the world