There's a certain little device there that will do us both a power of good.

He took a certain device in his hand and waited for the sound of engine startup.

And even birds are prevented from leaving the valley by a certain device of which I have heard.

Part of the new picture was certain devices that Haney and the chief were assembling.

Meanwhile the Australian military has come across that a certain ancient device which can be used to travel in time.

I don't have to remind you about a certain timed device?

"The client chose not to put certain devices on the roofs, to save money."

Many saddle seat horses also wear certain devices to increase their action while in training.

Perhaps more important, they are few; and only they can operate certain devices, or plan the best use of these.