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VOA慢速英语:Copper Metal Kills Viruses on Contact

2016-02-02来源:VOA

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Words in This Story

sterilize – v. to clean (something) by destroying germs or bacteria

pathogen – n. medical : something (such as a type of bacteria or a virus) that causes disease

mutation – n. biology : a change in the genes of a plant or animal that causes physical characteristics that are different from what is normal

fantastic – adj. extremely good