marginal cost of capital

例句：

1. 1. Themarginal cost of production is the additional costincurred when producing one more unitof output.
   生产边际成本是生产额外一单位产出时增加的成本。
2. 2. The marginal costof capital is the additional cost incurred when investing in a new project.
   资本边际成本是投资新项目时增加的成本。
3. 3.The marginal cost of capital is an importantfactor to consider when making investment decisions.
   资本边际成本是做出投资决策时需要考虑的一个重要因素。