灌水

早上好。这一周拉下不少工作，周末得赶一赶了。

water, a substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid, and solid states.

It is one of the most plentiful and essential of compounds

A tasteless and odourless liquid at room temperature, it has the important ability to dissolve many other substances.

Indeed, the versatility of water as a solvent is essential to living organisms.

Life is believed to have originated in the aqueous solutions of the world’s oceans, and living organisms depend on aqueous solutions, such as blood and digestive juices, for biological processes.

Water also exists on other planets and moons both within and beyond the solar system.

In small quantities water appears colourless, but water actually has an intrinsic blue colour caused by slight absorption of lightat red wavelengths.

Although the molecules of water are simple in structure (H₂O), the physical and chemical properties of the compound are extraordinarily complicated, and they are not typical of most substances found on Earth. 

哈哈哈，笑死了， 你是要吧Wiki上water的definition一句句搬上来吗？ 我发现为了攒魅力的姐妹们都很拼很有才啊！ 手动点赞！

For example, although the sight of ice cubes floating in a glass of ice water is commonplace, such behaviour is unusual for chemical entities

For almost every other compound, the solid state is denser than the liquid state; thus, the solid would sink to the bottom of the liquid. 

The fact that ice floats on water is exceedingly important in the natural world, because the ice that forms on ponds and lakes in cold areas of the world acts as an insulating barrier that protects the aquatic life below.

If ice were denser than liquid water, ice forming on a pond would sink, thereby exposing more water to the cold temperature.

Thus, the pond would eventually freeze throughout, killing all the life-forms present.

姐妹们早上好！

早上水一水

水水更健康

210