氟 (fú) — fluorine (chemical element)

Definition

Examples

• 这种牙膏里含有氟。
  Zhè zhǒng yá gāo lǐ hán yǒu fú.
  This toothpaste contains fluorine.
• 氟是一种化学元素。
  fú Shì yì zhǒng huà xué yuán sù.
  Fluorine is a chemical element.
• 水里的氟含量不能太高。
  Shuǐ lǐ de fú hán liàng bù néng tài gāo.
  The fluorine content in water cannot be too high.