Conversely, an unnaturally low voice can be achieved by asking the singer to inhale the harmless gas sulfur hexafluoride.

There was a moment of silence, then Mr. Thompson asked, his voice unnaturally low, "Are you crazy?"

Chinese officials and exporters defended the surge as natural after the lifting of unnaturally low quotas.

If the yuan is unnaturally low, it keeps their exports competitive and makes everyone else's goods expensive for the Chinese to buy.

It was Auden Travis again, speaking in an unnaturally low voice.

"That was an unnaturally low price."

The unnaturally low voice she shared with Sam echoed across the chamber and everybody else froze.

They were unnaturally low to the water, their hulls a stark black, relieved only by the white strakes along their gun ports.

The stern was unnaturally low in the water and the rudder was probably unshipped, but that did not matter for the moment.

A similar phenomenon may be seen on the collector side, called V sag, where V is pulled unnaturally low.