More massive ones can fuse deuterium, and even lithium, but not hydrogen, distinguishing them from “normal” stars.

质量更大的恒星可以聚变，甚至锂，但不能聚变氢，这将它们与“普通”恒星区别开来。

That's why when there's deuterium in water molecules, it's about 10% heavier, and we call it “heavy water”.

这就是为什么水分子中具有氢时，量会增加10%，所以我们称之为“水”。

But I could be sipping on heavy water, or deuterium oxide, aka D2O, just as easily.

但我也可以轻轻松松啜饮水，或者说氧化，又称D2O。

Rats and mice die when about a third of the water in their bodies has deuterium in it.

约有三分之的水中含有氢时，大鼠和小鼠都会死亡。

Instead of hydrogen or deuterium, it contains tritium, an isotope of hydrogen that has two neutrons, and is radioactive.

与氢或氢相比，它还含有氚——氢的种同位素，含有两个中子，具有放射性。

But don't go filling up all your bottles with pure deuterium oxide, because too much will almost definitely kill you.

但不要往瓶子里倒满纯氧化，因为过量的话，几乎可以确定会置你于死地。

For a few minutes the particles smashed together, forming deuterium, an isotope of hydrogen, helium, and just a smattering of lithium.

几分钟后，这些粒子碰撞在起，形成了(氢的种同位素)、氦和少量的锂。

In the case of heavy water, the bonds between deuterium and oxygen are stronger than the bonds between hydrogen and oxygen in normal water.

在水中，氢和氧的化学键强于普通水中氢和氧的键。

Deuterium is a form of hydrogen, or isotope, with a bonus neutron, which makes it twice as heavy as the regular hydrogen we all know and love.

氢是氢的种形式，或者说同位素，有着额外的中子，使得它比我们熟悉且喜爱的常规氢倍。

We know the Earth's oceans contain a mixture of normal water, H2O, and heavy water, HDO, which includes deuterium, a form of hydrogen that is twice as heavy as normal hydrogen.

我们知道海洋中拥有地球上水的混合物水(氧化氢)与水(氧化)含有种氢的同位素，为氢质量的两倍。

It turns out that ones more massive than about 13 times Jupiter can also fuse deuterium, an atom that's very similar to hydrogen, except it has a proton and a neutron in its nucleus.

事实证明，那些质量大于木星13倍的原子也能聚变。是种与氢非常相似的原子，只是其原子核中有个质子和个中子。

So, I'm not recommending you do this, but if you really want to test out some heavy water, just make sure we're talking about deuterium oxide, not tritium oxide—it's not going to be a dead person.

所以, 我不建议你这样做。但如果你真的想尝些水，只要确保我们指的是水而非超水——这不会致命。