龋齿

qǔchǐ

龋齿 — qǔchǐ

tooth decay; dental caries; decayed tooth
他去看牙医，因为有龋齿需要补牙。 tā qù kàn yáyī yīnwèi yǒu qǔchǐ xūyào bǔyá — He went to the dentist because he has tooth decay that needs filling.