当中产阶级的口味转向波尔多红酒之后，上流社会就抛弃了这种日渐寻常的饮料，转而青睐白葡萄酒和香槟酒了。
As the middle classes turned to claret, so the upper classes abandoned this increasingly common tipple in favour of hock and champagne.
另一个重要事实是，新奥尔良市的黑人上流阶级和中产阶级已经成为推动这些项目的重要因素。
The additional fact that New Orleans has upper-class and middle-class black populations has been a significant factor in such projects.
美国社会阶级不像欧洲国家那样固定，加上公共教育的普及，使沿着社会阶梯向上流动成为可能。
Unlike European countries, the social classes in America is not so stable. Further more, with the advocation of public education, movements upwards along the social ladder have become possible.
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