It sounds complicated, but really a supernumerary rainbow is one with smaller repeating rainbows inside it.

听起来似乎复杂，但真正的复式彩虹是在其一个彩虹内部还有一个较小的彩虹。

youdao

It sounds complicated, but really a supernumerary rainbow is one with smaller repeating rainbows inside it.

听起来似乎复杂，但真正的复式彩虹是在其一个彩虹内部还有一个较小的彩虹。

youdao