operative

1. ADJ A system or service that is operative is working or having an effect. (系統(tǒng)、服務(wù)) 起作用的[正式]

The commercial telephone service was no longer operative. 商業(yè)電話服務(wù)不起作用了。

2. N-COUNT An operative is a worker, especially one who does work with their hands. 技工[正式]

In an automated car plant there is not a human operative to be seen. 在全自動(dòng)汽車(chē)制造廠，一個(gè)工人也看不到。

3. N-COUNT An operative is someone who works for a government agency such as the intelligence service. 特工人員[美國(guó)英語(yǔ)]

Naturally the CIA wants to protect its operatives. 中央情報(bào)局當(dāng)然想保護(hù)自己的特工人員。

4. PHRASE If you describe a word as the operative word, you want to draw attention to it because you think it is important or exactly true in a particular situation. 關(guān)鍵詞

As long as the operative word is "greed," you can't count on people keeping the costs down. 只要關(guān)鍵詞是“貪婪”，你就不能指望人們降低開(kāi)銷(xiāo)。