He wanted to have a source of income after his retirement; until then, he wouldn't require additional money.
他想在退休后有个收入来源，而这之前则不需要额外的钱。
《柯林斯英汉双解大词典》
2
Feelings of hopelessness among medieval workers trapped in the poverty cycle gradually lessened as it became possible for women's labor to supplement a family's moneyincome by more than pennies.
受困于贫穷周期的中世纪工人的绝望情绪逐渐减轻，因为妇女的劳动可以为家庭的金钱收入补贴几便士。
3
Your income is the amount of money you make each month.