No live person interrupted their path as only machines hummed in faint life.

In the background, machines hum, pumping air and fluids into her body.

The screen was blank but the machine hummed, ready for use.

The machine hummed and grunted a bit, then blinked up a message.

The machine hummed to itself as though surprised, and then unlocked the keyboard.

And still the machine hummed on, eating up the distance as ever it flashed into view.

Finally the machine hummed to life and the papers began to spew out.

He took every bit of the hour, while the machines hummed away.

Michael's machines hummed around us and our only light source was a small bedside lamp.

The machine hummed; the light went on, and then off again.