1. Her novels poke fun at the upper class. 她的小说嘲弄上流社会。
2. All of them came from wealthy, upper class families. 他们所有人都来自富裕的上层阶级家庭。
3. Yet in museums, fine period rooms give only an image of the lifestyle of the upper class of that era. 然而，在博物馆里，精致的年代房只能反映那个时代上层阶级的生活方式。
4. States had at least three social levels, usually, an upper class of rulers, a middleclass comprised of managers and merchants, and a lower class of crop producers and agricultural laborers. 国家中至少有三种社会阶层，上层阶级（执政），中产阶级（商人，管理者）和下层阶级（农民，工人）。
