Home/astatineastatine/as-tuh-teen, -tin/US // ˈæs təˌtin, -tɪn //UK // (ˈæstəˌtiːn, -tɪn) //砹,砹砹,哮喘病人Definitionsn.名词 noun1 Chemistry.: a rare element of the halogen family. Symbol: At; atomic number: 85.Level 4Browse all words →