Normally, different molecules are connected by covalent chemical bonds between their atoms. But Sauvage and his team used copper ions to coax molecules into interlocking like links in a chain, which they call a catenane.

通常，不同通过它们原间共价化学键连接在一起。但索瓦日和他队使用铜离促使像链条中节一样相互扣合，他们称烷。

But before we talk about aromatics, let's talk about the most basic cyclic structures, the cycloalkanes.

但在我们谈论芳烃前， 让我们先谈谈最基本状结构， 即烷烃。