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.
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.
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.
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