1859F. A. Griffiths Artill. Man. (1862) 110 That part which is between the weight and the fulcrum is called the ‘counter-lever.’
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。