此外，撞击留下的大块物质会在主火山口周围形成二级火山口。
Also, large blocks thrown aside by the impact would form secondary craters surrounding the main crater.
一场猛烈地史前喷发使得地壳倒塌，并形成了装满水的火山口。
A violent prehistoric eruption caused the Earth's crust to collapse and form a crater that filled with water.
像宽干谷这样爆裂的火山口形成于蒸汽喷发的过程中，在那里，上升的岩浆与地表下的水接触形成了蒸汽喷发。
Volcanic explosion craters such as Dallol form during phreatic eruptions—where rising magma comes into contact with water beneath the surface of the Earth, causing a steam explosion.
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