慢速英语:Copper Metal Kills Viruses on Contact
日期:2016-02-02
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