英语词汇“first-day cover”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	first-day cover
释义	first-day cover first-day cover n (Philately) philately a cover, usually an envelope, postmarked on the first day of the issue of its stamps first′-day` cov′er n. an envelope bearing a canceled stamp and postmarked on the stamp's first day of issue at the postal station where it was first released. [1935–40, Amer.] Translations first-day cover first-day cover Philately a cover, usually an envelope, postmarked on the first day of the issue of its stamps
随便看	selection and seed production of vegetable crops, institute of selection authority selection based on consultant's qualifications selection bias selection board selection check selection coefficient selection combining selection-combining/maximal ratio combining selection committee selection criteria selection criterion selection differential selection diversity selection effect selection effects selection & implementation of integrated packaged software selection index selection intensity selectionist selection landscape selection limit selection log selection/mutation balance selection of a guardian

英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。

first-day cover