radioactivity
US /ˌreɪ.di.oʊ.ækˈtɪv.ə.t̬i/
UK /ˌreɪ.di.əʊ.ækˈtɪv.ə.ti/
名词
放射性
the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei
示例:
•
The scientists studied the effects of radioactivity on living organisms.
科学家们研究了放射性对生物体的影响。
•
The nuclear power plant carefully monitors for any signs of increased radioactivity.
核电站密切监测任何放射性增加的迹象。