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.

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。

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Using light sensors, the researchers showed these red and yellow hues were linked with the levels of carotenoids in their skin.

借助光传感器，研究人员指出，皮肤呈现的红色和黄色与皮肤内所含的类胡萝卜素水平有关。

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Yellow Light - supplies energy for skin cells, promotes gland effect, assists digestion, cures skin diseases and enhances immunity ability.

黄光—给皮肤细胞补充能量、促进腺体作用、辅助消化、治疗皮肤疾病、增强免疫能力。

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