And finally, you learned a few common reactions and uses for aromatic compounds.

最后， 您了解了芳香族化合物的一些常见反应和用途。

You also learned a little bit about cis-trans isomerism and learned a few important reactions of alkenes and alkynes such as hydrogenation, halogenation, and polymerization.

您还了解了一些顺反异构现象，并了解了烯烃和炔烃的一些重要反应，例如氢化、卤化和聚合。