| 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。 |