Buggy是四轮的轻便马车。在火车、汽车和飞机还没发明之前，美国人运输通常就靠这种马拉的车子。从大约1790年起人们开始用horse-and-buggy days来指以往的岁月。

【例句】
The post-industrial crisis always reminds citizens of the horse-and-buggy days.
后工业时代的危机总是能让人们回想起以往的岁月。

Some people look back to the horse-and-buggy days as a better time than now. But remember those were the days before we had movies, TV, modern medicine and all the other things that make life a lot easier.
有些人怀旧；老是觉得今不如昔，但是你可别忘记那时人们是没有电影、电视、现代医药以及种种生活便利设施的。