discretionary income

基本解釋

Of course, I have discretionary income.
當(dāng)然，我有可自由支配的收入。
That's why the President announced that beginning next year, no student will have to pay back more than 10 percent of their discretionary income toward their student debt.
這也是為什么總統(tǒng)先生宣布從明年開始，對于助學(xué)貸款債務(wù)，再也沒有一個學(xué)生的每月償還額會超過自己可自由支配收入的10%。
Poultry meat is the primary animal protein in Africa (which has little to begin with) and the indispensable source of discretionary income for the survival of millions of small farmers.
禽肉是非洲主要的動物蛋白（首先由于那里的物質(zhì)很貧乏），也是數(shù)百萬小農(nóng)生存中不可或缺的可隨意支配的收入來源。

The aid calculation starts with a look at the discretionary income of the parents.
FORBES: Paying for College: Five Rules to Protect Your Retirement
Rather it is providing me with an enjoyable online experience to spend my discretionary income .
FORBES: Should Facebook Acquire Kickstarter?
The sophisticated targeting of consumers will reveal that golfers have discretionary income to buy more stuff.
FORBES: Apps May Kill Golf As We Know It