The damaged portion of the building, completed a year ago at a cost of $900 million, is an elliptical tube built with technology developed for underground tunnels.

These may be confused with similar tubes built by subterranean termites.

The stands were made from truck exhaust pipes and had color-changing LED tubes built inside.

The tube built by E. nebulosa can be up to twenty-five centimetres long.

The new Heinz contraption has a reservoir and a small tube built inside a tall cap.

The calcareous tubes built by Galeolaria worms are white to grey.

The calcareous tubes built by this worm are up to 3 cm in length.

It lives in a tube built of sand, gravel and pieces of shell.

A tube built into the NBC mask can be used to take in liquids (water, food).

The control center was a curving tube built above the big, blackened smelters.