marginal efficiency of capital

例句：

1. 1.The marginal efficiency of capital is a critical factor in the economic growth rate.
   资本的边际效率是经济增长率的关键因素。
2. 2.The marginal efficiency of capital has been studied extensively in recent years.
   近年来，对资本边际效率的研究非常广泛。
3. 3. The marginal efficiency of capital can be influenced by various factors, including technology and innovation.
   资本的边际效率可以受到各种因素的影响，包括技术和创新。