Now, I'm talking about 1900 America where has that happened in the twentieth century more dramatically?

刚才我说的就是在二十世纪,美国的哪些行业发生了巨大的变革

耶鲁公开课 - 博弈论课程节选

Now, I'm talking about 1900 America where has that happened in the twentieth century more dramatically?

刚才我说的就是在二十世纪,美国的哪些行业发生了巨大的变革

耶鲁公开课 - 博弈论课程节选