1930s; earliest use found in George Hutchinson (b. 1903). From German Monimolimnion from ancient Greek μόνιμος stable + German -limnion.
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。