The stone initial is sh, the vowel is I and the tone is two.

The initial is t, the final is ou, and the tone is light.

Stone generally refers to a small rock mass that falls off when a large rock mass encounters an external force. Most of them are attached to the surface of large rock mass, generally in block or oval shape, with rough or smooth appearance, hard texture and brittle hardness.

It can be used to make stone tools and collect stone mines. Thousands of years ago, ancestors made fires with stones. Stone is generally composed of calcium carbonate and silicon dioxide.

Extended data

Many raw materials of modern industry are stones: iron ore, copper ore, aluminum ore and so on. Stones can be used for architecture, collection, wearing, book titles and "stone pot crispy sausage".

Rocks can be divided into three types according to their genesis, but because nature is a continuum, it is difficult to really divide them into three types of lithology according to classification, so some transitional rocks, such as tuff (cemented by volcanic ash and rocks falling into the surface or water), may be classified as sedimentary rocks or igneous rocks, but they can still be divided into three categories: sedimentary rocks, igneous rocks and metamorphic rocks.

The most important use of stone in modern life is concrete. Making cement, even making concrete with cement, sand, pebbles or gravel, is all stone.