牙根 (yá gēn) — root of a tooth

定義

例文

• 他的牙根很痛，需要去看医生。
  Tā de yá gēn hěn tòng, xū yào qù kàn yī shēng.
  His tooth root hurts badly; he needs to see a doctor.
• 医生检查了牙根，发现有些发炎。
  Yī shēng jiǎn chá le yá gēn, fā xiàn yǒu xiē fā yán.
  The doctor examined the tooth root and found some inflammation.
• 刷牙时一定要刷到牙根。
  Shuā yá shí yí dìng yào shuā dào yá gēn.
  When brushing your teeth, be sure to brush all the way to the root.