Instead of these letters, there may be a checkerboard pattern.

如果不是这些字母，也可能是棋盘格图案。

What you get is a checkerboard pattern, then one space at the point which you can't make either color.

你得到的是一个棋盘图案，然后在你不能做任何一种颜色的地方有一个空间。

Instead, the pressure arranged the helium and sodium into a kind of 3-D checkerboard pattern, forcing pairs of electrons to separate and basically hang out on their own in between the helium atoms, almost like a negatively charged ion without a nucleus.

相反，高压将氦原子和钠原子以类似3D立体棋盘的模式进行组合，强迫电子对分开，基本上都单独悬浮于氦原子之间，近似没有原子核的负离子。