when the positive and the negative are on top of one

因为当正负电荷无限接近时
another it becomes infinitely favorable.

是一个异常稳定的状态
So it's hard to do this numerically,

所以很难进行数学处理
and the program will screw up

处理库伦势能时
sometimes when you try to do Coulombic potential.

程序有时也会失效
And it's one-dimensional, and it turns out, curiously enough,

奇怪的是结果表明
that the system is simpler

处理库伦势能时
in three dimensions than in one dimension, for a Coulombic potential.

三维情况比一维来得简单
Don't worry about the technical aspects of that.

其中的原因暂时无需了解
But at any rate, this is using the program for that,

总之这是用程序来处理的
and you can see that the lowest -- that you have very,

你会发现在接近零点处
very high curvature when you get near zero

其曲率非常大