supernumerary rainbow

基本解釋

So as the saying goes, roses are red, violets are blue, and purple in a rainbow is a supernumerary hue.
所以正如俗話說紅玫瑰紫羅蘭，藍(lán)紫的彩虹就是多餘環(huán)。
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It sounds complicated, but really a supernumerary rainbow is one with smaller repeating rainbows inside it.
聽起來似乎複襍，但真正的複式彩虹是在其一個(gè)彩虹內(nèi)部還有一個(gè)較小的彩虹。