Canals checkerboard the countryside on both sides of the river.
河
两边遍布
横交错
。
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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
盘的模
进行组
，
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。
