• I think the idea of a stock must have been invented independently at many times in history.

    我认为股票这个概念,在历史上被反复提出过多次

    耶鲁公开课 - 金融市场课程节选

  • When the conditioned stimulus and the unconditioned stimulus are brought together over and over and over again, pretty soon the conditioned stimulus gives rise to the response.

    当条件刺激与非条件刺激,同时且多次反复出现,条件刺激很快也能引起条件反应。

    耶鲁公开课 - 心理学导论课程节选

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