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，不同分子通过它们原子之间共价化学键连接在一起。但索瓦日和用铜离子促分子像链条中环节一样相互扣合，们称之为环烷。

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

但在我们谈论芳烃之前， 让我们先谈谈最基本环状结构， 即环烷烃。