Another flicker, annoyance this time; then only that unwavering concentration as Peter put another blue block on top of the pile.

Another says teams win the trophy with continuous intensity and unwavering concentration.

They watched the courtiers with unwavering concentration, and now and then metal claws eased out from under their fingernails, ready for use.

There were a number of steps in the process when the elements became unstable, handled safely only through unwavering concentration of laran.

The top layers of the oceans, like the atmosphere, contained fairly unwavering concentrations of carbon dioxide for more than 400,000 years.

She stood in the corner and stared at their party with unwavering concentration.

"If you don't have unwavering concentration and focus," he said, "you'll get absolutely knackered."

With unwavering concentration, she offers a harrowing portrait of a woman suffering an eclipse of the brain.

There was unwavering concentration in her blue eyes.

Each slow, meticulous step required unwavering concentration.