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

质量更大恒星可以聚变氘，甚至锂，但不能聚变氢，这将它与“普通”恒星区别开来。

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

这就是为什么当水分子中具有重氢时，重量会增加10%，所以之为“重水”。

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

但也可以轻轻松松啜饮一口重水，或者说氧化氘，又D2O。

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

当体约有三分之一水中含有重氢时，大鼠和小鼠都会死亡。

5.Specifically, the ratio of deuterium to hydrogen to helium.

具体来说， 是氘与氢与氦。机翻

6.One of them, called deuterium, we'd extract from water.

其中之一，为氘，将从水中提取。机翻

7.Then another atom of hydrogen is joined to the deuterium to form helium-3.

然后另一个氢原子与氘结合形成氦 3。机翻

8.Of the hydrogen nuclei, 26 out of every million were deuterium.

在氢原子核中，百万分之 26 个是氘。机翻

9.The greater weight of deuterium causes it to behave differently in the Martian atmosphere.

更大氘重量导致它在火星大气中表现不同。机翻

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

与氢或重氢相，它还含有氚——氢一种同位素，含有两个中子，具有放射性。

11.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，这些粒子碰撞在一起，形成了氘(氢一种同位素)、氦和少量锂。

12.What's amazing about deuterium is that it's stable - it doesn't decay.

氘惊人之处在于它很稳定——它不会衰变。机翻

13.The problem was, to form helium-4, you first have to form deuterium, one proton and one neutron.

问题是，要形成氦 4， 你首先必须形成氘、一个质子和一个中子。机翻

14.Water molecules made of heavier deuterium instead of ordinary hydrogen are known, straightforwardly enough, as heavy water.

由较重氘而不是普通氢组成水分子被为重水， 直截了当。机翻

15.Mice and rats die when about a third of the water in their bodies has deuterium in it.

当老鼠体大约三分之一水含有氘时， 它就会死亡。机翻

16.A third of the insects were by the end of the procedure deuterium positive.

三分之一昆虫在程序结束时呈氘阳性。机翻

17.A fifth of them were full of deuterium, They had.

其中五分之一充满了氘，他有。机翻

18.The 3He would be replenished by tweaking conditions to promote a side reaction that makes it from two deuteriums.

3He 将通过调整条件来补充，以促进由两个氘生成副反应。机翻

19.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氘，因为过量话，几乎可以确定会置你于死地。

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

但是不要用纯氧化氘装满你所有瓶子，因为太多几乎肯定会杀死你。机翻