A city is assigned to a tier based on the size , purchasing habits , disposable income of its population and so on .
一个城市的等级是按照其面积大小,消费者购买习惯,当地居民可支配收入等因素划分的。
The return on higher education , particularly in the second and third tier , has plummeted in the last 36 months .
高等教育的回归,特别是第二,第三等级的回归,最近36个月内骤然降温。
The countries in the lowest tier , mostly in africa and the middle east , probably won 't surprise many .
最低等级中大多数是非洲和中东国家,这很可能不会让许多人感到诧异。
Below it suspended sits what might be thought of as the professional middle class-unexceptional college graduates for whom the arrow of fortune points mostly sideways and an upper tier of college graduates and postgraduates for whom it points progressively upward but not spectacularly so .
Mr taylor says that the findings reflect previous research , which has indicated that wealthy americans are highly focused on getting value for money , reflecting in part the middle-class origins of the majority of the richest tier .