used to refer to a situation in which something that starts in the high parts of a system spreads to the whole of the system
滴入式的，涓滴式的
The supposed trickle-down effect of lower taxes for the rich has not yet resulted in greater prosperity for society as a whole.
預想中給富人減稅的涓滴效應還沒有給整個社會帶來更多繁榮。
Source: https://dictionary.cambridge.org/dictionary/english-chinese-traditional/trickle-down
