And he was poisoned by radioactive polonium. He died the slow agonizing death in 2006.

他被放射性元素钋毒杀。在2006年缓慢又痛苦地死去。

British officials said they added radioactive polonium to his tea.

英国官员称他二人在利特维年科茶放入了放射性元素钋。

It was being warmed by radioactive elements in the granite that formed in the solidified magma chamber below.

在下面凝固的岩浆腔的花岗岩的放射性元素正在给它加热。

Everywhere are traces of the sudden appearance of rare radioactive elements like plutonium, a legacy of nuclear weapons.

到处都有迹可循的是诸如核武器或燃料等设备才涉及到的这类放射性元素的突然微量出现。

Since Mars doesn't have easily accessible radioactive elements, the nuclear fuel needs to come from Earth along with the reactor.

由于火星没有易获得的放射性元素，核燃料和反应堆均需要来自地球。

So, were there other radioactive elements that might be responsible?

么，是否还有其他放射性元素可能对此负责？

Neutrinos are subatomic particles produced when radioactive elements decay.

微子是放射性元素衰变时产生的亚原子粒子。

They are radioactive elements, they decay.

它们是放射性元素，会衰变。

Bismuth is interesting because it is the heaviest element that is not radioactive.

铋很有趣， 因为它是最重的非放射性元素。

As a radioactive element decays, the individuals atoms split into multiple, but when that happens the reaction also releases energy.

当放射性元素衰变时， 单个原子分裂多个原子，但当这种情况发生时， 反应过程也会释放能量。

Spinning the pump backward, he took away the radium.

将泵向后旋转, 他取出了放射性元素。

She was getting tiny amounts of radium out of the pitchblende.

她从沥青混合物提取了少量的放射性元素。

Let’s start off with another scientist who worked with radioactive elements -- Lise Meitner.

让我们从另一位研究放射性元素的科学家开始——Lise Meitner。

Meanwhile, the whole world was falling in love with radium.

与此同时, 整个世界都爱上了放射性元素。

Let's take a look at what may be the most famous radioactive element, uranium.

让我们来看看最著名的放射性元素铀是什么。

The price of radium is too expensive.

放射性元素的价格太贵了。

The entrepreneur asked, is this amount of radium enough?

这位企业家问道, 这么多的放射性元素够用吗?

Radium could help treat cancer, but the opposite was also true.

放射性元素可能有助于治疗癌症, 但反之亦然。

Radium was making people sick, including Marie and Pierre.

放射性元素让人们生病, 包括玛丽和皮埃尔。

For example, they discovered radium, which has a great effect on X-ray exposure and cancer treatment.

例如, 他们发现了放射性元素, 这对X射线照射和癌症治疗有很大影响。