| 单词 | red-letter day |
| 释义 | red-letter dayWord forms: plural red-letter days countable noun A red-letter day is a day that you will always remember because something good happens to you then. red-letter day in British Englishnoun a memorably important or happy occasion Word origin C18: from the red letters used in ecclesiastical calendars to indicate saints' daysand feastsExamples of 'red-letter day' in a sentence |
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