radioactive
US /ˌreɪ.di.oʊˈæk.tɪv/
UK /ˌreɪ.di.oʊˈæk.tɪv/
1.
放射性的
emitting radiation as a result of the spontaneous disintegration of atomic nuclei.
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The waste material is highly radioactive and must be handled with extreme care.
废料具有高度放射性，必须极其小心处理。
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Certain elements, like uranium, are naturally radioactive.
某些元素，如铀，是天然放射性的。