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武林中,有隐身功夫的传说;军事上,有雷达探测不到的隐形飞机;与此相类似,数学上也有一种“隐性关系”,常常阻挠我们攻占“据点”.
In martial arts, there are legends of stealth kung fu; in the military, there are stealth aircraft that cannot be detected by radars; similarly, there is also a kind of “hidden relationship” in mathematics, which often prevents us from capturing “bases”.