1. 上地壳：upper clouds 高云 | upper crust 上地壳 | upper culmination 上中天
2. 富人：高产阶级 upper class | 富人 upper crust | 简报 catalog
3. 上流社会：upper case 大写体 | upper crust 上流社会 | upper hand 优势
1. But it's no longer a symbol of the upper crust - it's an affordable place that trades on nostalgia to draw in diners.
2. Not only genteel but intelligent, they are leading a lifestyle typical of the upper crust of society.
3. As a rule, obesity is a phenomenon characteristic of the upper crust of society.
4. But because most property values aren't appreciating, the upper crust has become more conservative with its money.
noun
1. the class occupying the highest position in the social hierarchy
Synonym: upper class