英语语法分析

The eumelanin has been bleached by the sun, and the red color is showing through, however slightly.

这是因为在阳光下，真黑素被淡化，而红色则现显出来，虽然十分微弱。

Individuals with lower levels of a melanin pigment called eumelanin are likely to have blonde hair.1.

黑色素水平较低的个体(eumelanin)很可能拥有金发。

The subtype pheomelanin is responsible for red hair, while the subtype eumelanin is responsible for grey, black, yellow, and brown hair.

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。