单词	protractor
释义	protractorprotractor /proʊˈtræktɚ, prə-/ noun [countable] math, geometry an instrument, usually in the shape of a half-circle, used for measuring and drawing angles
随便看	equivalent equivalent equations equivalent inequalities equivalently equivalent systems equivocal equivocally equivocate equivocation ER -er er era eradicate eradication erase eraser Erasmus, Desiderius erasure ere e-reader Erebus, Mount erect erectile erection

英语词典包含48224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。