These four drivers are fusing together and creating the big shift -- away from the 20th century, defined by hyper-consumption, towards the 21st century, defined by collaborative consumption.
这四个驱动因素 共同影响 并创造了这种巨大的转变-- 从20世纪起 过度消费的定义 转变为21世纪 协作消费的新定义。