sweet potato carotene 甘薯胡萝卜
The plan has good chances of success, since sweet potato is a staple of the region's diet and agriculture, and the varieties currently grown contain little beta-carotene.
该计划成功的机会很大，因为红薯是该地区的主食和主要农产品，而且目前种植的品种几乎不含胡萝卜素。
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