But for most of us our native tongue is alive and constantly shifting.

With cards in use, the game is more fluid and positions are constantly shifting.

His eyes shifted constantly as he spoke, keeping a sharp watch on the darkness.

Robot planes would constantly shift position to communicate with one another.

They shifted constantly to keep a free path between prisoners and weapons.

His head shifted constantly as he tried to see everything in the street beyond Rand.

His focus is constantly shifting from the thing observed to its surroundings.

He shifted constantly, trying to fight off the pain.

She was constantly shifting it away from her clothes and out of other peoples' way.

Even so, his focus is constantly shifting from reporter to fighter pilot.