First, the spelling of teeth: chǐ

Second, the definition of teeth

1. Tooth

2. the toothed part of the object: saw ~. Comb ~ There are a few children missing from the fireplace.

3. Toothed: ~ wheel.

4. draw; Cite as the same kind: ~ platoon. Not for humans.

5. age: sequence ~. ~ all virtues are respected.

6. Speaking of; By the way: ~ and. Less than ~ (sh incarnation).

Third, the arrangement order of teeth: vertical, horizontal, vertical, horizontal, left, point, vertical folding/vertical bending, vertical,

Fourthly, the evolution of tooth type.

Related words of extended data tooth: tooth? Fangs? Rodents? White teeth? Dental caries? Gear? Teeth? Teeth and? Teeth? Is it toothless? Sawtooth? Tooth decay mention

1, tooth [yá chǐ]?

Organs used by humans and higher animals to chew food. It grows on the jaw, is highly calcified, and has enamel on the outer layer, which is harder than bone tissue. People have to sprout teeth twice in their lives. The first eruption is the deciduous teeth. The permanent teeth have sprouted again.

2. White teeth [hào chǐ]?

White teeth.

3. Dental caries [qǔ chǐ]?

Diseases, food residues ferment in teeth, produce acid, destroy the enamel of teeth, and form tooth decay, which is characterized by toothache and swollen gums.

4.Gear [chǐ lún]？

Gears on the machine. Usually in pairs, one rotates and the other is driven. Function is to change transmission direction, rotation direction, speed, torque, etc.

5. teeth?

In ancient times, men and women who had deciduous teeth were registered in the household registration book, which later referred to population and family: ~ The population is increasing.