| 词汇 | red-letter day |
| 词源 | red-letter day. Holidays, festivals, and saints’ days have been marked in red ink on calendars since the 15th century. Red- letter days were memorable and usually happy ones, so the ex- pression red-letter day eventually came to mean, more broadly, any pleasantly memorable day, a lucky day more important than most. Incidentally, since purple ink was also used to indi- cate special days in medieval times, the phrase could just as easily have been “purple-letter day.” |
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