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I considered some of the awful things my grandparents and great-grandparents had seen in their lifetimes: two world wars, killer flu, segregation, a nuclear bomb.

我想到了祖父母和曾祖父母在世时遇到的可怕事情：两次世界大战、致命流感、种族隔离、核弹。

youdao

The segregation of solute elements on metal grain boundaries may be divided into two categories, that is, equilibrium and non-equilibrium segregation.

溶质元素在金属晶界的偏聚可以分为两类，即平衡偏聚和非平衡偏聚。

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This movement is not consciously race-based, but it is certainly creating a two-tiered system and that inevitably leads to racial segregation as well as class segregation.

FORBES: Thoughts on ‘The Death and Life of the Great American School System’ (Part One)

The survey also found that the segregation of women for prayers was spreading, from half of the mosques in 1994 to two-thirds six years later.

CENTERFORSECURITYPOLICY: Spreading Wahhabism