"Roofing" Natural Recordings by Native Speakers
Covering for a building's roof, typically made of materials such as shingles, tiles, or corrugated metal, to protect the building from weather and elements.
The word "rontgen" refers to a unit of measurement for X-rays, specifically the amount of X-ray exposure, equal to the exposure required to produce one electrostatic charge of one electrostatic unit of electricity per unit of a cubic centimeter of air under standard conditions. The unit was named after the German physicist Wilhelm Conrad Röntgen, who discovered X-rays in 1895.
A piece in the game of chess, the rook can move horizontally or vertically any number of squares. It is one of the pieces that can also castle with the king in some variations of the game.