But slight as had been the discoveries and experiments referred to, they were the mine from which the inventions of subsequent times were quarried. 威廉·亨利·杜利特.世纪发明.
The immense veins of magnetic ore lie close to the surface and are mined or quarried by working along a series of benches or ledges. 佚名.神奇的知识之书.
They quarried the clay, manipulated it, constructed and decorated the ware, burned it in a rude furnace and wore it out in a hundred uses. 威廉·亨利·杜利特.世纪发明.
It is abundant in America and is largely quarried in the United States for building purposes, especially in New England. 佚名.神奇的知识之书.
Granite quarried anywhere in which felspar predominates is not well adapted for buildings, as it cracks and crumbles down in a few years. 佚名.神奇的知识之书.