The research may help explain why there is much consternation about wealth inequalityover the past two decades even though standards of living have improved for many in the lower strata.
这一研究可能有助于解释为什么在过去20年间，纵然许多社会低层人员的生活标准也得到改善，人们还是对贫富不均感到如此的恐慌。
