One factor that has helped cities is the nature of twenty-first century life. Previously, life in developed countries was based on daily routines: people went to work in offices and factories, returned home to eat dinner with their families, watched their favorite television programs, went to sleep, and repeated the cycle when they awoke.
对此其中一个对城市有帮助的因素就是21世纪生活的特质。在此之前，发达国家人们的生活都是基于一些每日常规活动：在写字楼或者工厂上班，回家与家人吃饭，观看喜欢的电视节目，上床睡觉，然后第二天醒来把上述活动又重复一遍。