marginal productivity theory

例句：

1. 1.This theory has been widely accepted by economists and policymakers.
   这一理论已被经济学家和政策制定者广泛接受。
2. 2. The marginal productivity of labor has been a topic of debate in economics.
   劳动的边际生产力一直是经济学中的一个争论话题。
3. 3. The marginal productivity of capital has been a subject of interest to investors.
   资本的边际生产力一直是投资者感兴趣的主题。