n.

chemical agent capable of activity

同義詞：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"

同義詞：active voice

a person devoted to the active life

1. The cream contains several actives that help reduce wrinkles.
   這種面霜含有多種活性成分，可以幫助減少皺紋。
2. In a team, the actives are those who engage regularly.
   在團(tuán)隊(duì)中，積極分子是那些經(jīng)常參與的人。