放射磷

例句：

1. 1. Radium is a rare and powerful radioactive element.
   镭是一种稀有且强大的放射性元素。
2. 2. The radium in the mine was discovered by accident.
   矿中的镭是偶然发现的。
3. 3. The discovery of radium led to many scientific breakthroughs.
   镭的发现引领了许多科学突破。