After planting their seeds, biologists must build special water catchments to bring in the precious moisture to give the seeds a chance.

Never water during the heat of the day, when precious moisture will be lost to evaporation.

Khan's mouth watered at the sight of the precious moisture.

And the vapor clouds we see when we exhale are yet more precious moisture leaking from our bodies.

But now crying was something worse than merely futile-crying meant loss of precious moisture.

Straw is crimped into the newly planted ground to hold in precious moisture while the plants take hold.

He knew the importance of water to these people, especially the precious moisture contained within a person's body.

Once more I collected the precious moisture.

When light came, every frond lifted, funneling the precious moisture down the trough-shaped veins and into hollow reservoirs below ground.