radioactive waste
US /ˌreɪ.di.oʊˈæk.tɪv weɪst/
UK /ˌreɪ.di.oʊˈæk.tɪv weɪst/

1.
放射性廃棄物
waste products containing radioactive materials, especially those produced by nuclear power stations and the processing of nuclear fuel, that are difficult and expensive to dispose of safely
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The safe disposal of radioactive waste is a major environmental challenge.
放射性廃棄物の安全な処分は、主要な環境課題です。
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Storing radioactive waste requires specialized facilities.
放射性廃棄物の貯蔵には専門施設が必要です。