marginal propensity to consume

例句：

1. 1.The marginal propensity to consume is a key 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 policy on consumer protection has a significant impact on the marginal propensity to consume.
   政府关于消费者保护的政策对边际消费倾向有重大影响。
3. 3. The marginal propensity to consume is influenced by various factors, including income level and cultural background.
   边际消费倾向受到各种因素的影响，包括收入水平和文化背景。