Scientists first identified this impact in 1980 from the worldwide layer of sediment deposited from the dust cloud that enveloped the planet after the impact.

1980年，科学家首次在从尘云中沉淀下来的全球范围的沉积层中识别出这种撞击，这些尘云在撞击后围绕着地球。

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Faced with any situation that can't be solved by the sheer force of activity, they generate a dust cloud of impatience.

面对任何单凭行动的力量无法解决的情况，他们会产生不耐烦的情绪。

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As a result, parts of the dust cloud have become stratified, pointing toward Merope.

其效果是，部分尘埃云分层指向墨洛珀。

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Up the road came the sound of creaking wheels and then, a slow cloud of dust.

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The slack body of Father Mychal Judge, seemingly at peace as he is carried through a dust cloud.

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Donald Lamb of the University of Chicago and his colleagues think it might be just a dust cloud reflecting the glow of the burst, which is therefore nearby.

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The extra weight and damaged engine meant he was forced to fly for 3 miles (4.8km) at around 20 ft (6m) from the ground, rather than the usual 50 ft (15m), creating a dust cloud which obscured his view.

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