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,因为事事无绝对,并不是每个人都能一个萝卜一个坑
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无摩擦的表面,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
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