But there were legal objections to a covert operation.

但是法律不允许这样的秘密行动。

youdao

You are Special Agent Strike, armed with an experimental exoskeleton suit, sent to investigate the disappearance of a US Special Forces unit that went missing while on a covert operation.

你是一名特工，以适应实验骨骼武装，前来调查美国特种部队失踪人员，而在一秘密行动中失踪。

youdao

Back then, the Hmong were fighters—secret fighters in a 15-year covert US operation backed by the CIA.

回想当初，这群苗民都是战士——一项由中情局支持、长达15年的美国保密行动的秘密战士。

youdao

But approaching photography like a covert operation is not the most ethical way to get a great shot.

BBC: Taking photographs of people

But HP drew headlines for news of the covert operation led by the HP board's chairman, Patricia Dunn.

FORBES: Companies, People, Ideas

The raid itself was conducted as a covert operation under the overall direction of then-CIA Director Leon Panetta.

CNN: Are 'Swift Boat' attacks on Obama bogus?