英语词汇Opportunity knocks only once是什么意思，Opportunity knocks only once的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典

单词	Opportunity knocks only once
释义	Opportunity knocks only once　机不可失,时不再来
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英汉汉英翻译词典包含1679246条英汉翻译词条，基本涵盖了全部常用英语单词及常用语的翻译及用法，是英语学习及翻译工作的有利工具。