这次火山喷发在上层大气中留下了一个薄薄的尘土层。
The eruption has left a thin veil of dust in the upper atmosphere.
“我们听到两声巨响…天空一片尘土，就像是火山喷发，然后洪水、泥浆夹杂着岩石倾泻到公路上，”她说。
"We heard two loud bangs... the sky was filled with dust like a volcanic eruption, and flood waters, mud and rocks streamed onto the roads," she said.
至于气温突降的原因，最具代表性的观点认为是由于天体冲撞或大规模火山喷发激起的火山灰和尘土。
As to what caused these cold snaps, the ever-popular suspects are ash and dust kicked up by either astronomical impacts or massive volcanism.
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