radioactivity
🇬🇧/ˌreɪdiəʊækˈtɪvəti/ 🇺🇸/ˌreɪdioʊækˈtɪvəti/
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21302
六级
Radioactivity is the release of energy from the decay of the nuclei of certain kinds of atoms and isotopes.
noun [专属名词] 放射性，放射现象；放射物（或其辐射）
Born Maria Sklodowska in Poland in 1867, she is famous for her work on radioactivity, and was twice a winner of the Nobel Prize. 她于1867年出生在波兰，原名玛丽亚·斯克洛多夫斯卡，以放射性研究而闻名，曾两次获得诺贝尔奖。
