禽肉是非洲主要的动物蛋白(首先由于那里的物质很贫乏)，也是数百万小农生存中不可或缺的可随意支配的收入来源。

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.

youdao

可随意支配的收入指的是你每个月收入里面扣除必要的贷款、帐单和生活开支后剩下的部分。

Feifei: Disposable income means the amount of money left every month after you've paid your mortgage and bills.

youdao

目前他们的年平均家庭收入仅为17600元，几乎没有可随意支配的收入。

With an average household income of 17,600 renminbi, these people currently have little discretionary income to spend.

youdao