radioactive contamination of crops

例句：

1. 1. The government has been working toreduce the radioactive contamination ofcrops in the area.
   政府一直在努力减少该地区农作物的放射性污染。
2. 2. Thescientists are studying the effectsof radioactive contaminationon crop yields.
   科学家们正在研究放射性污染对农作物产量的影响。
3. 3. Thecontamination of cropswith radioactive materials is aserious environmental issue.
   农作物受到放射性材料的污染是一个严重的环境问题。