CCTV cameras recorded the moment of the Marriott blast; grainy images show a man pulling a bag on wheels across the lobby before the flash of the explosion.

闭路电视记录下了万豪酒店发生爆炸的瞬间：模糊不清的画面显示，爆炸发生之前，一名男子拉着滚轮包穿过酒店大厅。

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The energy of a nuclear explosion is transferred to the surrounding medium in three distinct forms: blast; thermal radiation; and nuclear radiation.

核爆释放的能量将以三种不同的形式传递给周围环境：冲击波、热辐射和核辐射。

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Prior to the explosion, the project's general manger, Li Yong'an, reassured the public that the blast wouldn't spark an earthquake.

在爆炸之前，工程的总指挥，李永安向公众保证爆炸不会引发地震。

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Police said they were keeping an open mind about possible links between the blast and the explosion at a nearby Territorial Army barracks in February, which blinded a 14-year-old cadet.

BBC: You are in: UK

Now he was being told that the dead soldier was Private First Class Jay Cajimat, who was twenty years and two months old and who might have died immediately from the blast of the explosion, or a little more slowly in the resulting fire.

NPR: Excerpt: 'The Good Soldiers'

The BBC's Will Grant said the blast was the biggest explosion to hit Mexico City for 30 years.

BBC: Mexico blast victims' bodies handed over to families