calderas的音标：...

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 )....

n.喷火山口( caldera的名词复数 )...