名词
中文翻译：闰日
同义词：
['leap day', 'extra day', 'leap year']
例句：
-
1. The calendar has a leap day every four years.
日历每四年有一个闰日。
-
2. The extra day in the leap year is always on February 29th.
闰年的额外一天总是在2月29日。
-
3. People often celebrate the leap day with special events and traditions.
人们常常用特殊的活动和传统来庆祝闰日。