income capital flow

例句：

1. 1. The company's main source of income comes from its sales.
   这家公司的主要收入来源是其销售。
2. 2. The government needs to increase its income to fund the new projects.
   政府需要增加收入来资助新的项目。
3. 3.The businessman's income has increased significantly since he started his own company.
   这位商人的收入自从他开了自己的公司后显著增加了。