Ahead the glittering double strand of the track stretched into the distance.

He thought it a gas, but we secured his chair by a double strand of rope running right round the piano.

The children fastened strong double strands of rope to the front of the ship.

As a double strand, it can be kept on call for when it is needed.

Each strand is then copied to become another double strand.

He passed a double strand across his chest, under the arm-pits and through the chair-back.

She wore a midnight blue suit and a double strand of pearls.

One hand plays with the double strands of pearls.

At higher temperatures, about 100 C, the double strands break apart, doubling the number of molecules.

The other side is much damaged, but shows evidence of knot work of double strands.