Hormones activate target cells by one of two methods, depending upon the chemical nature of the hormone.

根据激素的化学性质，激素通过两种方法之一激活靶细胞。

But despite what you may think when you hear the word " chemical, " nature was using these sudsy molecules long before humans adopted them for handwashing.

但是当你听到" 化学" 这个词的时候，你可能会想，在人类用这些泡沫分子洗手之前很久，大自然就已经在使用它们了。

What it is about them, whether it's a difference in the chemical compositional nature of this material or something about its structure, its makeup, why it reflects so much more light, we don't know.

它们到底是什么，无论是这种材料的化学成分性质的差异，还是它的结构、构成，为什么它反射这么多的光，我们都不知道。