These are volcanoes so explosive that they burst open in a single big crack.
这些火山爆炸性极强，爆发瞬间出现了一道大裂缝。
2
These volcanoes are so explosive that they burst open in a single big crack, leaving behind a vast hole, the caldera.
这些火山具有极强的爆发性，以至于在它们从一条大的裂缝中喷涌而出，留下了一个巨大的洞，也就是火山口。
3
The paper analyzes the major dangerous factors in the exploding process according to the sensitivity of explosive, electricity induced early burst and the harmful gas produced in explosion.