事实上，有淀粉的番薯，都有浅黄色且粗糙的果肉，褐色的表皮；他们原产于非洲和亚洲，也是加勒比海地区和非洲部分地区的主要产品。
In fact, actual yams have starchier, light yellow flesh and a rough, brown skin; they are native to Africa and Asia, and an important staple in the Caribbean and in parts of Africa.
蓝色代表欧洲、黑色代表非洲、红色代表美洲、黄色代表亚洲、绿色代表澳洲。
The blue color represents Europe, the black represents Africa, the red represents America, yellow represents Asian, and the green represents Australia.
苘麻一种热带亚洲的一年生草本植物（苘麻属苘麻锦葵科），原产于美国，具有大而光滑的心形叶子和黄色花朵。它是中国北部的一种重要的纤维。
A tropical Asian annual herb(Abutilon theophrasti) naturalized in the United States, having large, velvety, heart-shaped leaves and yellow flowers. It is an important fiber plant in northern China.
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