Last week's northern lights-which lasted a few days-were products of a large burst of plasma, or charged gas, from the sun known as a coronal mass ejection.

太阳日冕物质抛射导致了等离子气体或称带电气体的大规模爆发，而后者又造成了上个星期持续了好几天的北极光。

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Last week's northern lights-which lasted a few days-were products of a large burst of plasma, or charged gas, from the sun known as a coronal mass ejection.

太阳日冕物质抛射导致了等离子气体或称带电气体的大规模爆发，而后者又造成了上个星期持续了好几天的北极光。

youdao