operative

情报员、特务、密探

An operative was sent overseas to gather intelligence on the group.

一名情报员被派往海外搜集该组织的情报。

技工、作业员、员工美式

The factory employs about two hundred operatives on three shifts.

这家工厂以三班制雇用了约两百名作业员。

干部、工作人员

Party operatives spent the weekend calling undecided voters.

政党的工作人员整个周末都在打电话给游离选民。

有效的、生效的、运作中的正式

The new safety rules became operative at the start of the year.

新的安全规定自年初起生效。

关键的、重点的

He might help us, and "might" is the operative word.

他或许会帮我们，而「或许」才是重点。

手术的医学

The patient recovered quickly with few operative complications.

病患恢复得很快，几乎没有手术并发症。