放射性尘降物

例句：

1. 1. The accident caused a largeamount of radioactive dust to fall fromthe sky.
   事故导致大量放射性尘埃从天空落下。
2. 2. The scientists carefully collected samples ofradioactive dust for further analysis.
   科学家们小心地收集了放射性尘埃样本以便进一步分析。
3. 3. The workers were wearing protective gear toprevent exposure to radioactive dust.
   工人们穿着防护装备以防止暴露于放射性尘埃中。