They followed her out, through a passage, and into the habitat ring.

Better make that an empty suite on the habitat ring.

Come, we'd better rush, pop back in behind them, and make a run for the habitat ring.

We'd have a thousand calls in from the habitat ring about no running water.

They arrived at the doors to the habitat ring, which opened before them.

She looked forward and saw the arc of the habitat ring sweeping away before her.

Return to the habitat ring- that is a direct order.

To the right lay tunnel two leading to the habitat ring.

"And how do you know they're not already in the habitat ring?"

She was still shaking when the lift stopped at her level of the habitat ring.