1884Whitney in Amer. Jour. Philol. V. 287 The precative active..is rare even to sporadicalness, being..made from only about 60 roots in the whole language.
英语词典包含277258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。