Even such an efficient engine, if large enough to deliver the proper performance, would have a low average fuel economy.

The occasion also marked the first proper public performance for the organ since the 1980s.

If it were my way I would beat you into the proper performance of your duties, for that is what you deserve.

We didn't have time to do a proper performance.

The effect of proper performance or payment is to release the party concerned from his contractual obligation.

"And at least she does not allow those feelings to interfere with the proper performance of it."

They are concerned with the detail of the proper performance of rituals.

Some software also has other requirements for proper performance.

For these sensors, using chemically compatible materials is important to assure proper performance.

And I'm not talking now about proper performance of professional duties.