Also, a highly efficient machine can make utility bills less painful.

But what have I done except put together an extremely efficient machine?

I had got myself into the gears of an efficient and unerring machine.

Others have refined the steam engine into a better, more efficient machine.

I have a small but efficient machine in Jamaica.

I was planned as a free-flowing work of art, an efficient machine designed for the landscape around me.

She had created an efficient machine to handle the domestic work of the empire.

The most efficient machine, he added, is a hand tool.

Every major great power-coalition war is won by the side with the most efficient productive machine.

Your body is an incredibly efficient machine, designed to work on food.