He warned that " the original social leveller" , the education system, may now " perpetuate intergenerational class stratification" .

他警告说，“原先的社会平衡器”——教育系统，现在反而固化了代际的阶层分化。

They come from long histories of racism, classism, a society based on race and class stratification.

他们来自种族主义、阶级主义、基于种族和阶级分层的社会的悠久历史。