重水之所以重是因为水中氢的重量是普通氢的两倍（它的原子核中有一个质子和一个中子，而不仅仅是一个质子）。
Heavy water is heavy because the hydrogen in it weighs twice as much as ordinary hydrogen (it has a proton and a neutron in its nucleus, instead of just a proton).
普通氢非常，非常缓慢即使在一个地方像在太阳中心一样无法想像的热。
Regular hydrogen fuses very, very slowly even in a place as unimaginably hot as the center of the sun.
科学家用到了一种叫离子显微镜的仪器，来比较月球岩石上氢的含量与重氢含量（重氢比普通氢多带有一个中子）。
The researchers used what’s called an ion microscope to compare the amount of normal hydrogen in the moon rocks to the amount of the hydrogen isotope deuterium, which carries an extra neutron.
在我们的星球上，哺育生命的都是些非常普通的元素。首先是烃，组成生命最基本的化合物之一，它仅仅由碳和氢两种化学元素组成。
The elements that give rise to life are hardly unique to our planet.Hydrocarbons, the basic molecules from which known life is built, are made of nothing but hydrogen and carbon.
研究人员发现10只饮用溶解有高浓度氢的水的老鼠同另10只喝普通水的老鼠之间存在差异。
The researchers observed the difference between having 10 mice imbibing water with a high volume of dissolved hydrogen and 10 drinking normal water.
从火中取水，听来似乎有些离奇，但我们可以发现，只要燃烧中的氢存在的话，水乃是火的一种普通副产品。
It may seem somewhat odd to get water from fire, but we shall find that water is a common by-product of any fire in which hydrogen takes part.
在我们的星球上，哺育生命的都是些非常普通的元素。首先是烃，组成生命最基本的化合物之一，它仅仅由碳和氢两种化学元素组成。
The elements that give rise to life are hardly unique to our planet. Hydrocarbons, the basic molecules from which known life is built, are made of nothing but hydrogen and carbon.
与仅可储存电量的普通电池不同，燃料电池可以通过诸如氢、烷等挥发性物体产生电能。
Unlike batteries, which simply store energy, fuel cells actually generate it from volatile stuff such as hydrogen or methanol.
并列举了普通电站、核电站、煤的气化、液化用钢及合金以及贮氢合金、非晶态合金的牌号及需求量。
And the grades and supplies of the steels and alloys used for power station, nuclear station, coal gasifying, coal liquefying and hydrogen - storing alloy and amorphous alloy are also illustrated.
氢分子，是宇宙中最普通的分子，仅有两个原子构成，每个原子仅包含一个质子和一个电子。
Hydrogen, the most common molecule in the universe, is just two atoms-each with one proton and one electron.
氢分子，是宇宙中最普通的分子，仅有两个原子构成，每个原子仅包含一个质子和一个电子。
Hydrogen, the most common molecule in the universe, is just two atoms-each with one proton and one electron.
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