Definition

Examples

• 那个火山口非常深，周围都是黑色的石头。
  Nà ge huǒ shān kǒu fēicháng shēn, zhōuwéi dōu shì hēisè de shítou.
  That crater is very deep, and it's surrounded by black rocks.
• 火山口里不断冒出热气。
  huǒ shān kǒu lǐ búduàn mào chū rèqì.
  Hot air keeps rising from the crater.
• 游客不能靠近正在喷发的火山口。
  Yóukè bùnéng kàojìn zhèngzài pēnfā de huǒ shān kǒu.
  Tourists cannot approach the erupting crater.