1930s. From German Adermin from a- + ancient Greek δέρμα skin + German -in, apparently so called because it acted to prevent a form of dermatitis in rats.
英语词典包含243303条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。