As a precaution scientists are monitoring radioactivity in the air.(作為一項預防措施，科學家正在監測空氣中放射性系數。)

How is radioactivity measured?(如何測量放射性？)

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.(這項工作為詹姆斯·查德威克爵士發現中子鋪平了道路，尤其是為伊蓮娜和弗雷德里克·約里奧特·居里在1934年發現人工放射性奠定了基礎。)

Element 43's radioactivity makes it easy to isolate and measure.(43號元素的放射性使其易于分離和測量。)

Both won the Nobel Prize and had Leukemia because of radioactivity.(兩人都獲得了諾貝爾獎，并因為放射性而得了白血病。)

We're hoping that all of the barriers to release of radioactivity will not fail.(我們希望所有防止輻射泄漏的屏障不要失敗。)

Fires and explosions that released radioactivity.(還有那釋放輻射物的大火和爆炸。)

What is the danger level for humans and radioactivity?(對人類的危險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年出生在波蘭，原名瑪麗亞·斯克洛多夫斯卡，以放射性研究而聞名，曾兩次獲得諾貝爾獎。)

For example, a reader may also capture the temperature or radioactivity of an item.(例如，讀取器也可以捕捉物品的溫度或放射能。)