economic rent

例句：

1. 1.The landlord's decision to raise rent has led to a decline in the number of tenants.
   房东决定提高租金，导致租户数量减少。
2. 2.The company's economic rent is primarily derived from its technological innovations.
   该公司的经济租金主要来源于其技术创新。
3. 3.The increase in economic rent has raised concerns about income inequality.
   经济租金的增加引发了对收入不平等的担忧。