breathing air

Students breathing pure oxygen did not yawn less than those breathing air with higher than normal levels of carbon dioxide.

Exposure also comes from breathing air at the surface of the water, where chemicals become volatile.

I would like to board the Mount Everest. 8848 m altitude breathing air, touch the thousand years of snow.

The cost of breathing air in the Chinese capital might be another matter, however.

All mobile equipment associated with the activity (except Breathing Air supply &temporary lightings ) shall be turned off.

Fred sat on the bridge deck of Bloodied Spirit, breathing air tinged with the scent of Hunter blood. It smelled like burnt plastic to him.

And there are also health benefits for babies: Passing through the birth canal helps prepare the lungs for breathing air.

The women worked hunched over the spinning frames in the mill, breathing air that was thick with cotton.

Breathing air was forced through ducts filled with copper pot scrubbers.

Breathing creativity like breathing air.

The particular hazards of MMVF are dust in the breathing air and poor hygiene leading to inhalation or ingestion .

You get oxygen by breathing air in through your nose and mouth.

I love you, dashan breathing, air and water.

Be sure the breathing air is safe.

Compressed non-breathing air for use in aircraft

Plant air or instrument air for breathing air