bissextileadj.
英 bɪ'sekstaɪl | 美
中文adj. 闰年的\nn. 闰年
闰年的
n. 闰年
词根词源
bissextile1580s (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.
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