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

他被放射性素钋毒杀。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中放入了放射性素钋。

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中形成的花岗岩中的放射性素正在给它加热。

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武器或燃料等设备中才涉及到的钚这类放射性素的突然微量出现。

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

当放射性素衰， 个原子分裂成多个原子，但当这种情况发生， 反应过程中也会释放能量。

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素，燃料和反应堆均需要来自地球。

Like her mother, Irene was awarded a Nobel Prize, along with her husband Frederic in 1935, for producing new radioactive elements.

和她的母亲一样，艾琳于1935年，与他的丈夫弗里德里克，因创造了新的放射性素，共同获得了诺贝尔奖。

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素的科学家开始——Lise Meitner。

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

那么，是否存在其他可能与此相关的放射性素呢？

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素铀是什么。

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素。

This could be caused by the decay of radioactive elements in the Moon's core.

这可能是由月球心中放射性素的衰引起的。

Neutrinos are subatomic particles produced when radioactive elements decay.

中微子是放射性素衰产生的亚原子粒子。

Nuclear power plants use a radioactive element as fuel.

电站使用放射性素作为燃料。

Spinning the pump backward, he took away the radium.

将泵向后旋转, 他取出了放射性素。

The price of radium is too expensive.

放射性素的价格太贵了。

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

放射性素可能有助于治疗癌症, 但反之亦然。

Radium was making people sick, including Marie and Pierre.

放射性素让人们生病, 包括玛丽和皮埃尔。

They are radioactive elements, they decay.

它们是放射性素，会衰。

So this will be the kind of radioactive elements that take a very long time to decay.

因此，这些将是那些衰过程极其缓慢的放射性素。