They wear bright clothes, dye their hair strange colors and decorate their skin with tattoos to make some kind of social statement.
他们穿着鲜艳的衣服，把头发染成奇怪的颜色，用纹身来装饰他们的皮肤，以表达某种社会宣言。
A temporary increase in melanin the substance that colors hair eyes and skin is the culprit.
黑色素暂时的增加是罪魁祸首，这种物质让头发、眼睛和皮肤带上色彩。
A temporary increase in melanin, the substance that colors hair eyes and skin, is the culprit.
黑色素暂时的增加是罪魁祸首，这种物质让头发、眼睛和皮肤带上色彩。
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