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。

Each letter stands for a different wavelength on the visible spectrum, which correlates with a different color seen with the naked eye -- red, orange, yellow, green, blue, indigo and violet.

每个字母代表可见光谱上不同的波长，这与肉眼看到的不同颜色有关联——红色、橙色、黄色、绿色、蓝色、靛蓝和紫色。

These celestial arcs, with their bands of red, orange, yellow, green, blue, indigo, and violet, are not just stunning to observe; they are also a testament to the magic of physics at work in our everyday lives.

这些带有红色、橙色、黄色、绿色、蓝色、靛蓝和紫色带的天弧，不仅令人惊叹不已，而且还令人惊叹不已。它们也证明了物理学在我们日常生活中的神奇作用。