英语词汇opportunity knocks but once怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	opportunity knocks but once
释义	opportunity knocks but once
随便看	calcipala calciparine calciparine injection Calciparine Injetion calcipectic calcipelite calcipenia calcipenic calcipenic rickets Calcipenic type rickets Calcipen V calcipete calcipetrile calcipexic calcipexis calcipexy calciphile calciphilia calciphilic calciphilous calciphilous plant calciphilous plants calciphobe calciphobe plant calciphobic

英汉双解词典包含3607232条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。