- Micronomicin with weak fluorescence was oxidized to create active aldehyde groups with sodium metaperiodate,and further reacted with acetylacetone to produce a derivative with strong fluorescence.
- The orient has been playing an active role in the world economy.
- He is an active member of the school's stamp club.
- An active volcano may explode at any time.
- Is it wise to engage in active sports at your age?
- She was active as a left-winger in the party.