Hydrocarbons are fundamental components of organic chemistry.

We joined hands and walked through the park in a line.

Tetracontane is a saturated hydrocarbon with 40 carbon atoms in a row.

Carbon is one of the basic elements of life.

This color has a high saturation.

This sponge is saturated with water.

I bought three apples at the supermarket.

There are four apples in my bag.

Carbonization is a type of chemical reaction where organic matter changes under high temperatures and in a state of oxygen deficiency, turning into a substance with carbon as its main component.

When this wood is carbonized, its strength increases.