第一种是以农业为主的国家，主要是非洲，那里的贫困人口集中在农村地区，他们的生产的马铃薯用于家庭消费和在当地市场出售。
The first is agriculture-based economies, mainly in sub-Saharan Africa, where the poor are concentrated in rural areas and produce potato for home consumption first and then sale to local markets.
奥恩斯坦说，有几个以沙漠为主的国家很合适，包括沙特阿拉伯的大片地区和埃及以西一连串非洲国家。
Ornstein says several desert-heavy countries are suitable, including large chunks of Saudi Arabia and a string of African nations west of Egypt.
根据我有限的经验，纽约曼哈顿的出租车司机似乎以南亚、非洲、东欧和中美国家的人为主。
In my limited experience it seems that the greatest number of Manhattan-based New York taxi drivers hail from South Asian, African, Eastern European or Central American countries.
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