然而他们做梦也没想到，雨水时的尘埃微粒含有极强的放射性元素。
But they never imagined the particles contained in the rain had an array of radiation.
如果暴露在空气之中，可能会着火和爆炸，从而散发放射性微粒。
If left exposed to air, they may catch fire or explode, spreading radioactive particles into the air.
穿戴呼吸面具和防护用品可以防止摄入放射性微粒。
Wearing masks and respirators prevent the ingestion of radioactive particles.
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