单词	extra-
释义	extra-extra- /ekstrə/ prefix Word Origin WORD ORIGINextra- Origin: Latin extra ‘outside’, from exter; ➔ EXTERNAL Examples EXAMPLES FROM OTHER DICTIONARIES extracurricular activities extramarital sex 1outside or beyond:  extragalactic (=outside our galaxy) extracellular (=outside a cell)2informal very or more than normal:  extra-large extra-strong extra-special
随便看	proactive pro-am probability probable probably probate probation probationary probationer probation officer probe probing probingly probiotic probity problem problematic problematize problem page problem-solving pro bono proboscis probs procedural procedure

英语词典包含52748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。