That's one of the challenges of being a spy or case officer.

这只不过是特工或谍报人员要面临的考验之一。

youdao

Yes. You should contact your case officer if you would like to consider changing your packaged courses.

可以。如果你想更换配套课程，请与负责审理你的签证申请的官员联系。

youdao

The officer leading the investigation has been taken off the case.

主持调查此案的警员已被撤下。

《牛津词典》

His counterterrorist adviser, John Brennan, is as institutional a case officer as Langley has ever produced.

WSJ: Reuel Marc Gerecht: The Meaning of al Qaeda's Double Agent

But spy-catchers usually prefer watching to pouncing, in hopes of finding a suspected agent's case officer or means of communication.

ECONOMIST: Russian espionage

From 1957 to 1959, I was a CIA case officer in Laos.

WSJ: Book Review: The Ideal Man