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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 into the environment last month.上个月泄漏了大量的放射线,造成很大危险。
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