It's a breathing loop because you breathe off of it, and it's a closed loop, and you breathe the same gas around and around and around.

You blow in and out ...

He says, 'She won't breathe.' I knew immediately that she was dead.

They allow you to mechanically breathe, or mechanically ventilate.

My grandmother always said, Don t breathe and drink at the same time.

Air breathing organisms do not take up chemicals in the same manner as other aquatic organisms.

When he goes, dangerous elements on Wall Street will no doubt breathe a sigh of relief.

And I walked up to the bedside of an old woman who was breathing very rapidly, fragile, obviously in the latter phase of active dying.

Adrian thought that he was going to have to split the chest of the puppet in two and make it breathe like that because that's how a horse would breathe, with an expanded chest.

So, basically you breath pure O2 first, oxygenating your body, flushing out CO2, and you are able to hold much longer.

There's a chemical filter in there that pulls the carbon dioxide out of the breathing gas so that, when it comes back to us to breathe again, it's safe to breathe again.

It was enough for him simply to go to another place for me to imagine the worst and start obsessing. If I didn't hear him breathe while asleep I'd remember all those corpses that forgot how to breathe.

It is possible to safely breathe dense gases such as xenon or sulfur hexafluoride when they are in a mixture of at least 20 oxygen.

Especially if you breathe air, it's very hard to get from planet A to planet B, because there's no air in between. But if you breathe air you're dead as soon as you're off the planet, unless you have a spaceship.

When he goes, dangerous elements on Wall Street will no doubt breathe a sigh of relief. Let s hope that by then he will have helped move the consensus permanently among his colleagues preparing the ground for further congressional action aimed at a serious tightening of safeguards over the financial sector.