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。

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SALESPERSON: It only sounds complicated. It's really very easy.

店员：只是听起来复杂，做起来很简单。

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The process sounds complicated but really isn't. Listing 4 shows how it works

这个过程听起来很复杂，其实并不是这样。

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