Yvonne Cheng's singing mixed undulating lines and vocal sound effects.

"Perhaps it's time to think about duck hunting," I said, looking at the undulating lines of scoters low over the ocean.

The basic biorhythm chart has three undulating lines crossing a horizontal line.

Of these, the undulating line - a rhythmic painterly gesture in time - if featured most often.

In each of the superimposed layer the undulating lines have a different direction.

Two ceramic panels, set in a low table, depict undulating lines and a subtle flow of colors.

To its right was the large square where the prisoners sleepily stepped along the undulating line to the water tap.

Fighting against the pressure, Helward stopped when he saw that the mountains were once again not much more than an undulating line of low hills.

The hard bottom shows as an undulating black line.

There must have been a hundred crabs or more following it, an undulating, shambling line.