Sentence examples for once has been from inspiring English sources

Bob Crowley ("Once") has been running and winning in this derby for decades.

When a skill once has been acquired the robot must also be able to generalize to other similar skills, without a new learning process.

Orselli "has had a price on his head and more than once has been condemned to death," Ms. Deuell wrote.

Seeing mobs of readers cheer for Ann, focussing their love on absent author and present translator at once, has been thrilling to behold.

The transition last week draws attention to a West Wing office that at once has been crucial to Mr. Obama's presidency yet was nearly eliminated once he was re-elected and Mr. Plouffe (pronounced Pluff) kept to his plans to leave the administration.

Soldier Field's often scuffed, squishy or rock-hard turf — players say it can be all three at once — has been a topic of conversation this week as the Chicago Bears prepare to host the Green Bay Packers on Sunday in the N.F.C. championship game.

That would once have been laughable.

This cityscape might once have been London.

There may once have been some oil wells there too.

Ola During once had been filled with 250 patients.

These neurological freaks would once have been labeled psychotic.