• This kind of tension doesn't make things clear; the rules are not absolute, and not everybody fits into a pigeon hole.

    这种紧张的冲突并不能让万事柳暗花明,因为事事绝对,并不是每个人都能一个萝卜一个坑

    耶鲁公开课 - 古希腊历史简介课程节选

  • Somehow, if you could manufacture a really smooth frictionless surface, that if you took a hockey puck or something and an air cushion and you give it a push, in some idealized world, it'll travel forever.

    如果你制造一个绝对光滑摩擦的表面,然后在上面放个冰球或者别的什么,或者气垫,然后推它一下,在理想条件下,它会永远运动下去

    耶鲁公开课 - 基础物理课程节选

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