The sultry air penetrated the depths of the coal mine, and elevated the temperature.

Water and air cannot penetrate the plastic blanket and sometimes the soil underneath remains dry.

The air penetrates through your clothes, and nestles to your living body.

A Bronx elementary school was closed yesterday because of concerns that lead in the air from a nearby construction site might have penetrated the building.

That is why when animals breathe the air must penetrate inwards.

Sometimes the warm moist air penetrates through the wallboard into the wall cavities.

Ann doubted that any fresh air ever penetrated this deep into the People's Palace.

Both air and light, therefore, penetrated in some measure into the glade.

And if you are not crushed by such a pressure, it is because the air penetrates the interior of your body with equal pressure.

"We do leave some holes so that air can penetrate," he said.