齿轮 chǐlún cog; gear; gears

齿龈 chǐyín gums

剑齿 jiànchǐ sabre-toothed

锯齿 jùchǐ sawtooth; serrate

露齿 lùchǐ toothy

龋齿 qǔchǐ caries

牙齿 yáchǐ teeth; tooth; toothless

智齿 zhìchǐ wisdom tooth

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