radium

Marie Curie was awarded a Nobel Prize for her pioneering research into the radioactive element radium.

(Chinese) 玛丽·居里因其对放射性元素镭的开创性研究而被授予诺贝尔奖。

In the early 20th century, radium was used in glow-in-the-dark paint for watch dials.

(Chinese) 在20世纪初，镭被用于手表表盘的夜光涂料中。