英语词汇first-day cover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	first-day cover
释义	first-day cover /ˈfɜːstdeɪ/ noun an envelope bearing a stamp or set of stamps postmarked on their day of issue 首日封。
随便看	Borg borgata Borges Borgia boric boric acid boride boring boringly boringness Boris Godunov bork Borlaug borlotti bean Bormann born Born Borna disease born-again born and bred borne Bornean Borneo Bornholm Bornholm disease

英汉双解词典包含131075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。