The partners operated secretly to protect their interests.

At the same time he served as a teacher in one of the underground universities operating secretly in Warsaw.

Operating secretly in Silesian space this way, their necks were stretched out in six different directions.

They operated secretly and eliminated people who were considered dangerous to the struggle to free Eritrea.

The great majority"of unions therefore have to operate secretly.

Rimjingang secretly operates with journalists and reporters hidden within North Korea.

They courted press attention rather than operating secretly.

He would not be surprised if some of them might be operating secretly inside of Central Trading.

And it said there was no truth to allegations that workers secretly operated a waste incinerator closed for safety reasons.

The unit operated secretly in Iraq, Afghanistan and several classified locations for 2 years.