downward mobilityˈdaunwədməʊˈbɪlɪti:短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 趋下流动趋下流动 Is racism to blame for downward mobility among middle- class blacks? 黑人中产阶级的这一下滑现象是由于种族歧视吗？ ecocn It could signal a long-term decline in living standards— downward mobility. 它标志着长期的生活水平降低，进而流动性减弱。 yeeyan