marginal propensity to spend

例句：

1. 1. Themarginal propensity to consume is akey factor in economic growth.
   边际消费倾向是经济增长的关键因素。
2. 2. The government's spendingon infrastructure has a significant impact on theeconomy.
   政府在基础设施上的支出对经济有重大影响。
3. 3. The marginal propensity tosave is low, indicating that people aremore likely to spend than save.
   边际储蓄倾向较低，表明人们更倾向于消费而不是储蓄。