In addition, the artists have hired a 36-person private security team to maintain round-the-clock surveillance.

However, just to be on the safe side, Taizong maintained surveillance over his elder brother.

All they were prepared to do was to maintain surveillance on Mann and his boat.

We can't maintain surveillance, so it's not worth getting mad.

"I am not required to maintain surveillance on the customers."

The secret police prmptly maintained surveillance over the author who was still working in the court.

A5 China is maintaining surveillance on the people as a result of the pro-democracy movement.

In his new position, Putin maintained surveillance on the student body and kept an eye out for recruits.

They had been maintaining high surveillance most of the day, in relays.

Return control back to the primary computers and maintain surveillance of all computer activity.