bis.sex.tile
adj.（形容词）Of or relating to a leap year.闰年的：闰年的与闰年有关的Of or relating to the extra day falling in a leap year.闰年中增加的天数的：在一闰年中所增加天数的或与在闰年中增加的天数有关的n.（名词）A leap year.闰年
来源：Late Latin bissextilis [containing an intercalary day] 后期拉丁语 bissextilis [含有闰日的] from Latin bissextus [an intercalary day] 源自 拉丁语 bissextus [闰日] bi- [twice] * see bi- bi- [两次] *参见 bi-sextus [sixth, because the sixth day before the Calends of March (February 24) occurred twice every leap year] * see sext sextus [第六，因为古罗马历三月初一（二月24日）往前推的第六天每一闰年出现两次] *参见 sext
