举例来说，在未来一百年内，我们皮肤的色彩会从灰变白。
For one, our skin color shall go from gray to white in the coming quarter century.
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。
A temporary increase in melanin the substance that colors hair eyes and skin is the culprit.
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