单词trickle down theory
na.: 【经】利益扩散理论网络: 涓滴理论;滴入论;向下滴渗理论
【经济学】利益扩散理论
The trickle down theory [that wealth starts with the rich] has not delivered.
涓滴理论(财富从富人滴向穷人)并没有得到体现。