VOA慢速英语:Experts: Zika Could Infect 93 Million in Americas(翻译)

epidemic – n. an occurrence in which a disease spreads very quickly and affects a large number of people

symptom – n. a change in the body or mind which indicates that a disease is present

transmission – n. the act or process of spreading or passing something from one person or thing to another

defect – n. a part that is missing or misshaped

project – v. to plan or estimate something