Canals checkerboard the countryside on both sides of the river.
河的两边错的水渠。
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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。