| 单词 | first-day cover |
| 释义 | first-day cover in British Englishnoun philately a cover, usually an envelope, postmarked on the first day of the issue of its stamps first-day cover in American English (ˈfɜrstˈdeɪ) Philately an envelope, postal card, etc., bearing a newly issued stamp and a postmark for the first day the stamp was issued : also first day cover |
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