It's a lonely sport with no place for imagination lest the monsters that patrol the mind erode precious oxygen.

Complete immobility was the first requirement; for motion would create friction and thereby use up precious oxygen.

Electrified trains were used for coal transport, as the motors did not use precious oxygen in the mines.

He's a waste of skin+bones and is using up our precious oxygen!!!!

Breathing became even harder, his nose flaring, sucking down precious oxygen.

Whatever else it may have wanted, the blue tent wouldn't let its precious oxygen go willingly.

In fact, the lamp's flame was using precious oxygen.

The precious oxygen came too late to stop this wave of blackness rolling over Lowel.

Electric trains were also used to transport coal out of mines, as their motors did not use up precious oxygen.

"Every ton of recycled paper will save 17 trees that give off precious oxygen for our planet," he said.