(4428期)描述一个历史时期 Describe a historical period you would like to learn

街上没有什么车 you wouldn't find enough buses and taxies at that time讲话方式 生活节奏 交通工具 the way they spoke, the life they had, the public transport they took街上零污染 you couldn't find many cars on the streets, no carbon dioxide emissions on the street,生活简单幸福 The life could be much easier and happier