The nebula is a large supernova remnant, an expanding cloud born of the death explosion of a massive star.

该星云是超新星的遗迹，是一个大质量的恒星死亡爆炸时的扩散云气形成的。

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As such, it was proposed that the explosion happen on the border of the visible part of the moon, so that the resulting mushroom cloud would be clearly visible, being illuminated by the sun.

因此，曾提出爆炸应该在我们可以看到的月球部分发生，这样产生的“蘑菇云”就可以清楚地看到，被太阳所照亮。

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In the early morning of April 26th 1986, an explosion at the plant released a radioactive cloud that spread over large swathes of Europe and western Russia.

1986年4月26日清晨，该电站的一次爆炸释放的辐射云蔓延至欧洲及俄罗斯西部长长的一大块地带。

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As I wrote in a story about R last spring the explosion of cloud computing and sensors is creating huge data sets, and a need to find previously unknown patterns in them, both to prove and predict how the world runs.

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While the massive explosion that produced a mushroom cloud there last week is said not to have been caused by a "nuclear event, " press reports suggest the next one might be if, as some believe, Pyongyang is preparing to conduct a test of an atomic weapon.

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Virtualization and the cloud had caused an explosion in the number of assets that are being created.

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