Such ice cores trap gases, bits of dust, and other chemicals that were present in the snow that fell over Greenland for thousands of years and then became compressed into ice.

这些冰芯将气体、尘埃和其他化学物质封存在格陵兰岛数千年来的积雪中，然后被压缩成冰。

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Dust settles over the bars like a slow, fine snow.

金条上的灰尘就像温柔美丽的雪花。

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When the star exploded, it sent out a blast wave into the surrounding material, scooping up interstellar dust and gas as it went, like a snow plow.

当这颗恒星爆发的时候，它产生的冲击波向周围扩散，如同一个铲雪犁一般掀起路径上的星际尘埃。

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