英语词源
- bissextile
- 1580s (n.); 1590s (adj.), in reference to Roman leap year, from Late Latin (annus) bissextilis "leap year," literally "the twice sixth-day," because the sixth day before the Calends of March was doubled.
权威例句
- 1. The years 1960 and 1964 were both bissextile.
- 1960和1964年都是闰年.