Historically, this color came from natural plant-derived indigo.

历史上，这个颜色取自于自然植物的靛蓝色。

For red, orange, yellow, green, blue, indigo and violet. Well, the color indigo just made news.

这些首字母分别代表红、橙、黄、绿、蓝、靛、紫。而靛色最近有了新的消息。

This isn't the case with indigo dye.

靛蓝染料不是这种情况。

As the indigo washes away, it brings minuscule amounts of thread with it.

当靛蓝被冲走时，它会带来少量的线头。

The Japanese indigo plant, for example, makes the blue dye molecule in its leaves.

例如，日本靛蓝植物在其叶子中制造蓝色染料分子。

Duke Ellington and his orchestra recorded a famous song – Mood Indigo – about the deep blue color, indigo.

艾灵顿公爵（Duke Ellington）与其乐队录制了一首著名的描述深蓝色的歌曲：Mood Indigo。

At nine feet in length, eastern indigos are considered to be the longest native snakes in the United States.

体长9英尺，东部靛蓝蛇是美国本土最长的蛇了。

The researchers grow the microbes in liquid culture, where they replicate and divide to produce the indigo color.

研究人员在液体培养中培养这些微生物，让它们能复制和分裂，产生靛蓝颜色。

And it's in South America that researchers recently found the oldest known example of fabrics dyed with indigo.

最近，研究人员就在南美洲发现了目前已知最古老的靛蓝染色布料。

Indigo dye was used around the ancient world in fabrics created from Egypt to China to Meso and South America.

靛蓝染料在古代用于对布料进行染色，而这些布料一般产自埃及、中国、中美洲以及南美洲等地方。