Translation

• seven sevens (equals 49)
• cf Buddhist services for the auspicious reincarnation of the departed

Examples

• 家父是在三年前离世的，也就是一九七七年。
  My father died three years ago, that is to say in 1977.
• 美国人快餐食物的消耗量在一九七七至一九九五年间大幅增长了三倍。
  In America, the consumption of fast-food has tripled between 1977 and 1995.