operative

• 指正在运作、有效或起作用的；也指在特定情境中最重要、最关键的。

Describes something that is in effect, functioning, or having the most relevant significance in a given context.

1. In effect or functioningB2formal

   Being in force, active, or currently operating.

   有效的

   • The new regulations will become operative next month.
   • The treaty remains operative despite the political tensions.
   • Is the emergency protocol still operative?

   同义词activecurrenteffectivefunctionalin effectin forceoperationalworking

   反义词deaddefunctinactiveinertinoperativenonfunctional

2. Surgical treatmentB2formalmedical

   Relating to or requiring treatment by surgery, as opposed to medication.

   外科手术的

   • The patient required operative intervention to remove the tumor.
   • Operative procedures are often the last resort for this condition.
   • The surgeon explained the risks of the operative treatment.

   同义词surgical

3. Effective or producing resultsC1formal

   Producing a desired effect; effective in achieving a goal.

   有效的

   • The new strategy proved highly operative in increasing sales.
   • Her leadership was the operative factor in the team's success.
   • The operative word in the plan is 'efficiency'.

   同义词effectiveeffectualefficaciousproductivesuccessfuluseful

   反义词futileineffectiveinefficaciousunproductiveuseless

4. Functional (machine)B2formal

   Performing or capable of performing a function, especially for a machine or system.

   可运行的

   • The machine is fully operative after the repairs.
   • All systems are operative and ready for launch.
   • The operative parts of the engine need regular maintenance.

   同义词functionalfunctioningin operationoperationalrunningserviceableusableworking

   反义词brokendeadinoperativenonfunctional

• 名词，指为政府秘密从事谍报工作的人，也指可受雇收集信息的侦探。

A noun referring to a person secretly employed in espionage for a government, or someone who can be employed as a detective to collect information.

1. Espionage agentB2formal

   A person secretly employed in espionage for a government or organization.

   特工

   • The operative was sent to gather intelligence on the enemy's plans.
   • She worked as a covert operative for the agency for over a decade.
   • The operative's identity was kept secret to protect the mission.

   同义词agentassetintelligence agentsecret agentspyundercover agent

2. Private detectiveB2formal

   Someone who can be employed as a detective to collect information.

   私家侦探

   • The company hired a private operative to investigate the theft.
   • The operative followed the suspect for several days.
   • She worked as an operative for a detective agency.

   同义词agentdetectivegumshoeinvestigatorprivate eyeprivate investigatorshamussleuth