TED演讲之2.0版城市:为何市长应该统治世界(2) Moreover, today, more than half of the world's population 除此以外，超过世界人口的一半以上 live in cities. 都居住生活在城市。 In the developed world, it's about 78 percent. 在发达国家中，这种比例达到了78%。 More than three out of fo 英语演讲 2020-09-12 hisen
