operative

1.工作人员；（尤指）技术工人，操作员a worker, especially one who works with their hands

2.密探；（尤指政府的）特工人员a person who does secret work, especially for a government organization

1.[nubn]可使用；在使用中ready to be used; in use

2.[obn]手术的connected with a medical operation

the operative word

关键词；最重要的词语used to emphasize that a particular word or phrase is the most important one in a sentence

1.工作着的,操作的,运转的

2.起作用的;有效验的,有效力的

3.【医】手术的

1.职工,工人

2.〈美〉私人侦探

1.working correctly and having the right effect

1.someone who does a particular kind of work, especially in a factory

2.someone whose job is to do secret work, especially for a government organization