Definition

Examples

• 闰年每四年出现一次。
  rùn nián měi sì nián chūxiàn yí cì.
  A leap year occurs every four years.
• 今年是闰年，二月有二十九天。
  Jīnnián shì rùn nián, èr yuè yǒu èrshíjiǔ tiān.
  This year is a leap year; February has 29 days.
• 闰年比平年多一天。
  rùn nián bǐ píngnián duō yì tiān.
  A leap year has one more day than a common year.