This is because the tremendous heat produced from a nuclear blast causes an up-draft of air that forms the familiar mushroom cloud.
这是因为核爆产生的大量的热能会把空气往上吸入，形成令人熟知的蘑菇云状。
The stars form when gas in the cloud condenses under its own gravity and becomes packed enough to ignite nuclear fusion.
星云中的气体在它的重力下凝聚形成新星，新星变得足够满以避免核聚变。
Nothing Mr ElBaradei's men say looks able yet to dispel the cloud of Iranian secrecy and Western suspicion that hovers over Iran's nuclear programme.
巴拉迪的下属们表示，看来还没有任何东西能驱散笼罩在伊朗核计划上的伊朗秘密及西方疑虑的阴影。
A cloud chamber experiment is described, in which the angular distribution of secondary particles produced in nuclear interaction by high energy cosmic ray particles with paraffin has been studied.
本文描述一个利用云室研究高能宇宙线粒子与石蜡的核作用中次级粒子角分布的实验。
A cloud of white smoke rose above Japan's earthquake-damaged Fukushima Daiichi nuclear plant Wednesday, as radiation levels were reported to have increased again.
周三一团白色烟雾在由于地震受损的日本福岛核电站上空升起，同时根据报道，辐射指标再次上升了。
A cloud of white smoke rose above Japan's earthquake-damaged Fukushima Daiichi nuclear plant Wednesday, as radiation levels were reported to have increased again.
周三一团白色烟雾在由于地震受损的日本福岛核电站上空升起，同时根据报道，辐射指标再次上升了。
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