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VOA慢速英语:科学家们找到了一种杀死携带疾病的蚊子的新方法
2019-07-24来源:和谐英语
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insecticide - n. a chemical substance that is used to kill insects
pest - n. an animal or insect that causes problems for people especially by damaging crops
sterilization - n. way to make something unable to produce young
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