radioactivity
US /ˌreɪ.di.oʊ.ækˈtɪv.ə.t̬i/
UK /ˌreɪ.di.əʊ.ækˈtɪv.ə.ti/
名詞
放射性
the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei
範例:
•
The scientists studied the effects of radioactivity on living organisms.
科學家們研究了放射性對生物體的影响。
•
The nuclear power plant carefully monitors for any signs of increased radioactivity.
核電站密切監測任何放射性增加的跡象。