Contact with water is instantly lethal to chlorine-breathers.

"The heartwood resin is instantly lethal to a mesembrythem addict," she con-cluded.

The stings were the Gogles-kans' only natural weapon, but the poison they delivered was instantly lethal to the metabolism of any warm-blooded oxygen-breather.

The tiny holes sealed instantly, but the crew was finished; the ammonia vaporized inside, releasing instantly lethal nerve toxins.

Instantly lethal.

Now the monitor indicated the concentration was below 200 ppm, still dangerous but not instantly lethal.

These speeds would be instantly lethal if not travelling in Number One's special craft.

This is probably illegal and definitely unwise (although the Seine is not the instantly lethal brew it has been), yet it seemed somehow festive.

Just beyond the insulated metaglass the sluggish pond was at an instantly lethal 180 degrees below zero Celsius.

Contact with chlorine is instantly lethal to them.