单词	improficiency
释义	improficiency noun im·​proficiency ¦im+ archaic : lack of proficiency Word History Etymology in- entry 1 + proficiency
随便看	syncytium syncytiums syncytoid synd Syndactyla syndactylic syndactylies syndactylism syndactylisms syndactylous syndactyls syndactyly synded synderesis syndeses syndesises syndesm- syndesmo- syndesmoses syndesmosis syndesmotic syndet syndetic syndetically syndeticcer

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。