The reason for conducting such a research is to find out which sections of the society (lower middle class or higher middle class) do a lot of shopping in the malls.
进行这样的研究的原因为了准确分析社会中产阶级中哪部分人群（中产阶级的下层或高层）在商场购物的次数和购物量更多。
And helping the lower class rejoin mainstream of society is in the interests of all.
帮助下层社会的人重新回到社会主流中来，符合所有人的利益。
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