They are called Red-Letter Days because in calendars they were marked in red ink.

吉利日之所以叫做“红色字母日”，是因为这些日子在日历中被印成红色的缘故。

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In the medieval calendar there were two kinds of day - Dismal Days and Red-Letter Days.

在中世纪的日历中，有两种日子——不吉利日和吉利日。

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Dismal Days were considered unlucky, while Red-Letter Days were important festivals throughout the year.

不吉利日被认为是倒霉的日子，而吉利日是一年里重要的节日。

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He recalled his early Chicago days in a letter published when he resigned from the Senate after his election as president in November.

VOA: special.2009.01.12

I'm thinking of the writing life one might have whenever we write a letter these days.

我所说的写作，也包括,现代生活中的写信。

普林斯顿公开课 - 人性课程节选

To Pune, 29 February 1996 add Nairobi, 24 February 2003 as the red letter days of Kenyan cricket.

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In a letter sent nine days after the battle George Neville, the then chancellor of England, wrote that 28, 000 men died that day, a figure in accord with a letter sent by Edward to his mother.

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As the vote has been passed, First Minister Carwyn Jones will notify Welsh Secretary Peter Hain of the assembly's wishes within 14 days by letter.

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