calderas

例句:

• A series of collapse craters , or calderas, lie at its summit.
  其顶端有一系列崩塌的火山口, 或称火山臼.
  
• The eruptions were associated with the development of a number of giant craters ( calderas ).
  随着火山爆发形成了多个大火山口 ( 破火山口 ).
  
• Calderas rise just like an inflating bubble.
  来自MSN
• In Wyoming the magma field and the calderas trail off to the west.
  来自SA
• Some examples of a much smaller explosive calderas erupting is Krakatoa and Mount Pinatubo.
  来自SA