这本是一个数学概念,用以说明世间万物都有自己的临界线—即便坚硬如钢铁,加热到一定的温度也会融化,改变成分。人更是无处不受到自身极限的制约——生命有极限,自古至今没有万寿无疆的人。人的体能有极限,在体育运动中,世界纪录是全人类的极限。人的能力有极限,周围一些不如意的事情就是不能消除;……连明星到一定程度也再难发出新的光亮。 This is a mathematical concept to illustrate that all things in the world have their own critical line - even if hard as steel, heating to a certain temperature will melt, change the composition. People are everywhere under the constraints of their own limits - there is a limit to life, since ancient times there is no Longevity of people. Human physical capacity has limits, in sports, the world record is the limit of all mankind. People’s ability to have the limit, some unpleasant things around can not be eliminated; even the stars to a certain extent, is also difficult to issue new light.