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| 单词 | radioactivity |
| 释义 |
radioactivity UK [ˌreɪ.di.əʊ.æk'tɪv.ɪ.ti] US [-oʊ.æk'tɪv.ə.tˌi] noun uncountable ■the quality that some atoms have of producing energy, which can be very harmful to health 放射（性） ■the energy produced by atoms in this way 放射线；辐射线；辐射能 •A dangerous amount of radioactivity was released |
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