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。

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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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Two different types of phase morphologies take place in copolymers with various compositions, that is, inter-lamellar and inter-fibrillar segregation.

同时，随共聚组成变化，共聚物呈现不同的相分离形态。

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These two factors segregation and unemployment helped to produce ugly race riots in several northern cities last summer, which were echoed last week when a mob of Asian youths in Bradford stoned a vicar and tried to torch his church.

ECONOMIST: Marriage and multiculturalism

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