This is very similar to how a morpho butterfly wing creates an iridescent blue.

闪蝶的翅膀为蓝色的 原理-- 这里有蓝色素，只有。

It was ground up and turned into a deep blue pigment known as ultramarine.

天青石色被磨碎并变成一种深蓝色素——深蓝色。

Creating some blue pigment, out of the blue, would have required inventing new chemistry, and there was no way to just add that recipe to their genes.

突然间创出一些蓝色素需要发明新的化学方法，而且有办法将这种配方添加到它们的基因中。

So how can you have blue eyes when there's nothing blue inside them?

但是为什么你的眼睛里有蓝色素却呈蓝色呢？

Not only that, but the consistency of their results was also incredible — Egyptian blue pigment is almost exactly the same chemical in tombs built across nearly 3000 years.

不仅如此，他们结果的一致性也同样惊人——埃及蓝色素和3000年左右所建陵墓几乎有着相同的化学物。

And they're not very common and we don't know much about them, and I don't know of any other blue pigment.

它们不是很常见，我们对它们不太了解，我也不知道其他蓝色素。