operative

詞型變化：

英文解釋：

名詞 operative:

1. a person secretly employed in espionage for a government
   同義詞：secret agent, intelligence officer, intelligence agent
2. someone who can be employed as a detective to collect information
   同義詞：private detective, PI, private eye, private investigator, shamus, sherlock

形容詞 operative:

1. being in force or having or exerting force
2. of or relating to a surgical operation
3. relating to or requiring or amenable to treatment by surgery especially as opposed to medicine
   同義詞：surgical
4. effective; producing a desired effect
   同義詞：key
5. (of e.g. a machine) performing or capable of performing
   同義詞：running, functional, working

例句：

1. This law becomes operative on 12 May.
   此法令自5月12日起生效。
2. The boss is hopping mad about it and `mad' is the operative word.
   老闆對此事暴跳如雷--｀暴跳如雷＇這個成語在句中最重要。
3. The oil rig is now fully operative.
   石油鑽塔現全面開工。
4. The station will be operative again in January.
   該車站將於一月份恢復使用。