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As a precaution scientists are monitoring radioactivity in the air.(作为一项预防措施，科学家正在监测空气中放射性系数。)
How is radioactivity measured?(如何测量放射性？)
This work prepared the way for the discovery of the neutron by Sir James Chadwick and, above all, for the discovery in 1934 by Irène and Frédéric Joliot-Curie of artificial radioactivity.(这项工作为詹姆斯·查德威克爵士发现中子铺平了道路，尤其是为伊莲娜和弗雷德里克·约里奥特·居里在1934年发现人工放射性奠定了基础。)
Element 43's radioactivity makes it easy to isolate and measure.(43号元素的放射性使其易于分离和测量。)
Both won the Nobel Prize and had Leukemia because of radioactivity.(两人都获得了诺贝尔奖，并因为放射性而得了白血病。)
We're hoping that all of the barriers to release of radioactivity will not fail.(我们希望所有防止辐射泄漏的屏障不要失败。)
Fires and explosions that released radioactivity.(还有那释放辐射物的大火和爆炸。)
What is the danger level for humans and radioactivity?(对人类的危险程度和放射性是什么？)
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。)
For example, a reader may also capture the temperature or radioactivity of an item.(例如，读取器也可以捕捉物品的温度或放射能。)
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