牙垢 (yá gòu) — tartar; dental calculus

Definition

Examples

• 你如果不每天刷牙，牙齿上就会长牙垢。
  Nǐ rú guǒ bù měi tiān shuā yá, yá chǐ shàng jiù huì zhǎng yá gòu.
  If you don't brush your teeth every day, you will get tartar on your teeth.
• 牙医说我的牙垢太多了，需要洗牙。
  Yá yī shuō wǒ de yá gòu tài duō le, xū yào xǐ yá.
  The dentist said I have too much tartar and need a dental cleaning.
• 经常喝咖啡会让牙垢更容易形成。
  Jīng cháng hē kā fēi huì ràng yá gòu gèng róng yì xíng chéng.
  Drinking coffee often makes tartar form more easily.

Origin