基本解釋[經(jīng)濟(jì)學(xué)]追溯交款英漢例句權(quán)威例句If new schools join the plan, you get retroactive benefits--your previous contributions lock in whatever tuition the new school charged when you invested, at a discount equal to the median discount schools in the plan offered that year.FORBES: Pay Now, Learn Laterretroactive contributions更多例句專業(yè)釋義經(jīng)濟(jì)學(xué)追溯交款