This means focusing economic aid on the plight of the underclass ? black , white or brown ? not on blacks in general 这意味着，以后将集中精力为生活窘迫的社会低层（不管他是黑色，白色或者棕色皮肤）提供经济援助，而不是主要为了黑人。
As the poor underclass is the central focus , the theory tries to explain its growth in the process of its adaptation to society from social situation perspective 该理论的中心关照对象是贫困群体，它试图从情境出发，解释社会适应过程中贫困群体生长的原因。
In the late 1970 ’ s , nearly a third of all blacks still belonged to the underclass americans so that they are poor , underprivileged and unable to seize the opportunity of advancement 20世纪70年代末期，几乎有三分之一的黑人属于下层阶级的美国人，穷困潦倒，没有地位，无法获得发展机会。
From the 1960s to 1990s , theory of social situation developed on the basis of deep discussions of the characteristic of underclass and its emergence 摘要1960 - 1990年代，西方学术界围绕“底层阶级”贫困群体的特征及产生，进行了一系列深入的研究和讨论，并形成了与此相关的理论解释社会情境理论。
Legislation to prevent genetic discrimination the creation of an underclass denied health care , employment or insurance because of this genetic knowledge could be in place within 10 years 10年内将可能出台立法以防止基因歧视，即由于基因情况被了解而出现一个无法获得医疗、就业和保险的下等阶级。
James has a dream . his dream is to move out of the underclass that apartheid created and into the world of opportunity that apartheid s demise has opened up for other luckier youths 他有一个梦想，他的梦想是要脱离种族隔离政策下产生的低下阶层，进入充满机会的世界，不再有种族隔离，让别的年青人也有机会
