1934in Webster.
1949M. Mead Male & Female iv. xiv. 293 The demon to be avoided..is lack of potency, defined in a number of quantitative ways—frequency, time, interval before rearousal.
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。