leap year 的英语意思
leap yearˈleap year noun [countable] 
查看全部语言翻译 a year, which happens every fourth year, when February has 29 days instead of 28闰年，每四年出现一次，二月有29天而非28天
查看全部语言翻译 a year, which happens every fourth year, when February has 29 days instead of 28闰年，每四年出现一次，二月有29天而非28天