operative
/ˈɔpərətɪv; ?@ -reɪt-; `ɑpəˌretɪv/ adj
(fml 文)
1 [usu pred 通常作表语]
operating; effective; in use 操作; 有效; 使用中
This law becomes operative on 12 May. 此法令自5月12日起生效.
The station will be operative again in January. 该车站将於一月份恢复使用.
The oil rig is now fully operative. 石油钻塔现全面开工.
2 (idm 习语) the operative word the most significant word (in a phrase, etc that has just been used) （刚用过的）最重要的词, 最关键的词
The boss is hopping mad about it and `mad' is the operative word. 老板对此事暴跳如雷--｀暴跳如雷＇这个成语在句中最重要. operative, n (fml 文)
1 worker, esp a manual one 工作者; （尤指）体力劳动者, 工人
factory operatives 工厂工人.
2 secret agent; spy 特务; 间谍
undercover operatives 密探.