actives

n.

chemical agent capable of activity

同义词：active agent

the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb

"`The boy threw the ball' uses the active voice"

同义词：active voice

a person devoted to the active life

1. The cream contains several actives that help reduce wrinkles.
   这种面霜含有多种活性成分，可以帮助减少皱纹。
2. In a team, the actives are those who engage regularly.
   在团队中，积极分子是那些经常参与的人。