黑色素

hēisèsù

A pigment in skin, hair, and the iris, the quantity of which decides their shade of color.

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melanin

【机】 melanin

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melanin

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hēi sè sù

n. melanin

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hei1 se4 su4

black pigment, melanin

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黑色素|黑色素 [hēi sè sù] ► black pigment ► melanin