The mere prospect of a performance of one his operas was enough to set him to running up bills amounting to ten times the amount of his prospective royalties. On an income that would reduce a more scrupulous man to doing his own laundry, he would keep two servants.
请问On an income的意思是？
on an income 靠收入 Many families on a low income are dependent on state support. 很多低收入家庭要靠国家补贴生活。（摘自《牛津英语搭配词典》第二版英汉双解版p.888）