单词	protograph
释义	protograph noun pro·​to·​graph ˈprōtəˌgraf : an original writing : holograph Word History Etymology prot- + -graph
随便看	backdoor draft backdoor trots backdowns backdrop backdropped backdropping backdrops backed backed (up or away) backed (up) backed away backed down backed off backed one into a corner backed out backed up backed up or away backed-blade backen backend backends backer backer-up backers backers-up

英语词典包含469781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。