Jan Low with the International potato Center, a research organization, says the sweet potato needs a better image in Africa.
研究机构“国际马铃薯中心”的简•洛称，甘薯在非洲需要一个更好的形象。
Jan Low with the International potato Center, a research organization, says the sweet potato needs a better image in Africa.
研究机构“国际马铃薯中心”的简•洛称，甘薯在非洲需要一个更好的形象。
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