Aristotle certainly recognized that the accumulation of political knowledge you might say the gathering of data the organization of facts is very important. Books III IV V of the Politics shows the empirical side of Aristotle's politics.

亚里士多德确实,体认到积聚政治知识,你也能说是收集数据,整理实证是非常重要的事,政治学》第，III，IV，V，册显示出,亚里士多德政治的,经验依据层面。

耶鲁公开课 - 政治哲学导论课程节选

Now, I hope you guys know that much calculus, that when you take a derivative of a function of a function, namely v square over 2 is a function of v, and v itself is a function of t, then the rule for taking the derivative is first take the v derivative of this object, then take the d by dt of t, which is this one.

我希望你们了解更多的微积分知识,当你对复合函数求导时,也就是说v^/2是关于v的函数,而v本身是关于t的函数,求导的法则应该是,第一步是这一部分对v求导,然后v再对t求导,得到这一部分

耶鲁公开课 - 基础物理课程节选