The president says the class of 2009 is leaving college at a time of economic uncertainty.

VOA: standard.2009.05.14

Nothing is said here about the education of farmers, artisans, merchants, laborers, the economic class.

这里并没有谈及,农夫的教育，或是工匠、商人、劳工，及有产阶级。

耶鲁公开课 - 政治哲学导论课程节选

This is a sign of my economic status: I don't have to work. It is middle and lower-class women who do not get to observe purdah in this way.

但这恰好是我经济地位的标志：,我不需要工作，只有中下阶层的女人,才像这样不遵守深闺的习俗。

普林斯顿公开课 - 人性课程节选

Weber said the report recommends fighting poverty and using U.S.political and economic leverage with authoritarian governments to promote democratic reforms and create a middle class and a civil society.

VOA: standard.2009.04.24

Such states, of course, did not need a bureaucracy for there were no vast royal or state holdings that needed management and not much economic surplus to support a bureaucratic class.

国家无需官僚体制,因为没有庞大的皇室家族,和国家财富需要管理,也没多少经济盈余能够维持官僚阶级

耶鲁公开课 - 古希腊历史简介课程节选