(In certain Indo-European languages) a class of verbs in which the present stem is identical with the root.
Late 19th century; earliest use found in William Whitney (1827–1894). After German Wurzelklasse.
英语词典包含464360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。