And then some air ducts, that stuff was falling down.

Then she got into the air ducts, big fat ones in a building that age.

Maybe the whole lower level was only air ducts or for flood control.

And then she moved inside, feeling the walls of the air duct against her scales.

They know more of the air ducts than we have asked them to learn.

"Then you better just block off the air ducts, too!"

One way or another, it was time to get out of the air ducts.

It is said that you and he were together in an air duct for two days.

The marble came to an air duct and rolled into it.

There may be times when you will want to add or modify an air duct.

My room's one window opened onto an air shaft with a garden at the bottom.

They'd gone about two hundred feet when the air shaft ended.

It was like walking along the bottom of an air shaft.

It was the bottom of the air shaft that led up to the second floor.

I don't know much about my neighbors in the window across the air shaft.

Proof of that was already coming from the air shaft.

There was space behind him: the opening of the air shaft.

I told them about the guy in the woods; they've been down the air shaft.

The only real windows look out on an air shaft.

She would scream things up the air shaft at me.