而庞大的黑人下层阶级仍然存在的事实—被最近的新奥尔良洪水以惊人的戏剧性方式暴露出来—主要是每况愈下的学校体系造成的。
The fact that a large black underclass remains – something the recent floods in New Orleans revealed in a horrifically dramatic way – is mainly the result of failing school systems.