Remember back to Alexander H. Steven's cornerstone quote he uses the word "Natural" Twice in that passage.

还记得亚历山大·斯蒂文的柱石上的引文,这段引文中他用了"自然"这个概念两次

耶鲁公开课 - 美国内战与重建课程节选

Steven says 1 and 10. We'll come back to 10.

斯蒂文说1和10,我们稍后说10

耶鲁公开课 - 博弈论课程节选