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 coverBrE /ˌfɜːst deɪ ˈkʌvə(r)/NAmE /ˌfɜːrst deɪ ˈkʌvər/ nouna specially printed envelope with a stamp that has a postmark with the date that stamps of that design were first sold 首日封（贴有纪念邮票并盖上邮票发行日邮戳的信封）
随便看	ravaging rave rave raved ravel raveled ravelers ravelian raveling ravelled ravel(l)er ravellers ravelling ravelly ravelments ravel out ravel out sth ravels ravel sth out ravel sth↔out raven ravened ravener raveners raveness

英汉双解词典包含314281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。