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A tropical American vine (Ipomoea batatas) having rose-violet or pale pink, funnel-shaped flowers, and cultivated for its fleshy, tuberous orange-colored root. 熱帶美洲藤本植物（甘薯） ，具有玫瑰紫或淡粉紅色漏鬭狀花朵，因多肉的桔黃色塊根而多有栽培。