But in the course of first copying the contents of the hard disk - a seemingly sensible precaution - they triggered the hidden program that irrevocably destroyed them.

Mr. Spock is far too interesting to destroy irrevocably, unless as a last resort.

The next day, at Hunter's court-martial, the senior platoon commander slowly but surely and irrevocably destroyed his credibility with his superiors.

Now she watched the dirty water soak the pages through, irrevocably destroying months of charcoal, pastel, and pencil memories.

A single nuke irrevocably destroys a sector.

The global population has since doubled and, although growth is slowing, is still on course to rise beyond the two billion maximum Ehrlich believes Earth can sustain without irrevocably destroying its water, earth and air.

The appearance of the fire lizard would certainly curtail the flow of abuse, but would irrevocably destroy any possibility of getting into Dunca's fair record.

When the genuine technological potential is still lacking, there is a danger that a binding target will be realised in a way that irrevocably destroys natural values.

Even if Martians didn't cause human diseases, they might irrevocably destroy earthly ecosystems, which wouldn't be good news for us, either.

(One student irrevocably destroyed the serious tension of his war story by writing, "The commander had a firm but genital hold on his men.")