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黑素子类别中的褐黑素的多少会决定头发红色的程度，而另一类真黑素则会决定头发灰、黑、黄和棕色的程度。
The subtype pheomelanin is responsible for red hair, while the subtype eumelanin is responsible for grey, black, yellow, and brown hair.
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黑巧克力中含有抗氧化的类黄碱素。
Dark chocolate contains flavonoids, which are antioxidants.
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