慢速英语:研究人员称牙膏中的物质可以抗击疟疾

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toothpaste - n. a product used for cleaning teeth

artificial intelligence – n. the ability of a machine to reproduce human behavior

liver - n. a large organ that produces bile and cleans the blood

parasite - n. an organism that lives in another creature and gets food or protection from it

plaque - n. a thin coating that forms on teeth and contains bacteria

colleague - n. a person who works with you