Cyclic hydrocarbons that contain resonant structures.

含有共振结构的环烃。

So far we've just been looking at the cyclic hydrocarbons, so what's up with the aromatics?

到目前为止， 我们一直在关注环烃， 那么芳烃又如何呢？

And you can't make a ring with one or two carbons, so the simplest cyclic hydrocarbon must be cyclopropane.

而且你不能用一个或两个碳组成一个环， 所以最简单的环烃必须是环丙烷。