However, because we've moved towards the right, we're moving toward smaller numbers. And therefore, a minus sign is required before the 2.

然而，因为我们已经向右边移动了，我们正朝着较小的数字移动。因此，在2之前需要一个减号。

So that just alternating series with plus and minus signs as the coefficient.

因此这只是以正负号交替的级数作为系数。

If this was the Sims, you would see the minus sign above my head right now!

如果这是模拟人生，你现在就会看到我头顶上的减号！

I'm using a minus sign to represent smaller, a plus sign to represent bigger, S to represent South, and N to represent North.

我用减号表示更小，加号表示更大，S 表示南，N 表示北。

This is basically the same expression he's been looking at, he just has to replace X by minus X squared, which adds in some minus signs and doubles the power of X on each term.

这基本上就是他一直在看的那种表情。他只需要将X替换为负X平方, 它添加了一些减号，并使每一项的 X 幂加倍。

Geometrically, the meaning of this function is that for any input vector X-Y-Z, you consider the parallelopyped defined by this vector, V and W, then you return its volume with a plus or minus sign, depending on orientation.

几何上 这个函数的意义是 对于任何输入向量X-Y-Z 你考虑由这个向量V和W定义的平行体 然后你返回它的体积 根据方向带正号或负号。