蒸气爆发、蒸气岩浆爆发起因于岩浆与外部水的相互作用所形成的基底涌流堆积物。
The steam eruption and steam magma explosion originate from the interaction between magma and external water.
热与冰的交互作用把岩浆雾化成比通常的火山灰更为纯净的微粒，同时，它产生的蒸气云把火山灰送到了比通常更高的高空。
The interaction of heat and ice atomized the magma into much finer particles than is typical, and created a steam cloud that sent the ash higher than usual into the air.
在巨大的压力之下，岩浆通常含有蒸气和其他气体。
The melted rock often contains steam and other gases under great pressure.
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