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 envelope with a set of special stamps postmarked on the first day of issue 首日封.
随便看	light bulb light-coloured lighten lighter lighterage lighterman light-fingered light-headed light-hearted light-heartedly light-heartedness light-heavyweight lighthouse light industry lighting lightly light meter lightness lightning lightning-bug lightning conductor lightning strike light pen lightship lightweight

英汉双解词典包含38652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。