The fruit that wasn't blackened by the heat is contaminated by volcanic dust.

这些没有被高温熏黑的水果却被火山灰尘污染了。

But large amounts of volcanic dust in the atmosphere would have also produced striking visual effect that people would have noticed at the time.

但大气中大量的火山尘埃也会产生当时人们会注意到的惊人视觉效果。