He mobilized public opinion all over the world against hydrogen-bomb tests.
他动员起世界各地的舆论，反对氢弹试验。
A molecule of water consists of two atoms of hydrogen and one atom of oxygen.
水分子由两个氢原子和一个氧原子构成。
Two atoms of hydrogen combine with one atom of oxygen to form a molecule of water.
两个氢原子和一个氧原子结合组成一个水分子。
Stars like our sun fuse hydrogen in their cores into helium.
太阳一类的恒星在其核心将氢聚变成氦。
The hydrogen gas could then be fed into a storage system and used to generate electricity when additional or backup power is needed.
然后可以将氢气输入到存储系统中，并在需要附加或备用电源时用于发电。
There are just two hydrogen atoms per cubic centimeter on average in space, which poses no threat to spaceships traveling at low speeds.
太空中平均每立方厘米只有两个氢原子，这对低速飞行的宇宙飞船不构成威胁。
By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.
通过测量一束头发上较重的氢和氧同位素的比例，科学家可以构建一个地理时间轴。
Therefore some scientists postulate that the Earth's earliest atmosphere, unlike that of today, was dominated by hydrogen, methane, and ammonia.
因此，一些科学家推断，地球早期的大气与现在的不一样，主要由氢、甲烷和氨构成。
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).
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）。
In the long run, electricity from large wind farms in remote areas might be used to make hydrogen gas from water during periods when there is less than peak demand for electricity.
从长远来看，在电力需求低于峰值的时期，偏远地区的大型风力发电场的电力可能会被用于电解水，以产生氢气。
Mainstream manufacturers are also getting interested in hydrogen.
主流汽车制造商们也对氢动力愈发感兴趣。
We're trying to modify photosynthesis to produce hydrogen directly from sunlight.
我们正尝试改进光合作用，以直接在阳光下制造出氢。
Hydrogen fuel cells work by combining hydrogen and oxygen to produce electricity.
氢燃料电池通过氢氧结合产生电能。
The question then arose, would it satisfactorily explain the spectrum of hydrogen?
于是问题升级了：它是否能够令人满意地解释氢原子光谱？
Just like most other stars, the sun is made up mostly of hydrogen, followed by helium.
就像大部分其它恒星一样，太阳主要由氢构成，其次是氦。
Like its bigger neighbor Jupiter, Saturn is a gas planet made mostly of hydrogen and helium.
就像比它更大的邻居-木星一样，土星也是气体行星，主要由氢和氦所组成。
Instead the nebula glows with light from hydrogen gas being charged by the stars' radiation.
星云的光辉则是来自在恒星强烈辐射作用下带电的氢气。
The advantage of hydrogen is its unrivalled simplicity: one electron circles a single proton.
氢的优势是其结构非常简单：一个电子环绕一个质子。
White dwarfs are stars that have burned up all of the hydrogen they once used as nuclear fuel.
而白矮星则是将其曾用作核燃料的所有氢原子都燃烧殆尽的恒星。
Liquid metallic hydrogen is thought to exist in the high-gravity interiors of Jupiter and Saturn.
人们认为，液态的金属化氢可以存在于大质量行星，如木星、土星等的内部。
The best explanation, Sharp says, is that there was hardly any hydrogen in the moon's magma ocean.
夏普认为最好的解释就是：月球的岩浆海洋中几乎不存在氢元素。
After that is the chromosphere, a layer that looks reddish because of all the hydrogen found there.
再之外是色球层，这一层由于存在的氢元素而略呈红色。
The presence of hydrogen in the soil, meanwhile, could provide a source of fuel for lunar visitors.
在土壤中存在的氢，将为月球的探访者带来燃料。
A methyl group is a basic unit in organic chemistry: one carbon atom attached to three hydrogen atoms.
甲基是有机化学的基本单位：一个碳原子连接三个氢原子。
Life on Earth requires six basic ingredients-carbon, hydrogen, nitrogen, oxygen, sulfur and phosphorus.
构成地球生命需要六项基本要素：碳、氢、氮、氧、硫、磷。
Nearly all their mass is made up of hydrogen and helium, giving them compositions like that of the sun.
它们的几乎全部质量都由氢和氦贡献，这使得它们的组成成分与太阳类似。
His discoveries, which won him the Nobel prize, led to the caesium atomic clock and the hydrogen maser.
这一获得诺贝尔奖的发现产生了铯原子钟和氢微波激射器。
Some of this energy congealed into particles, which assembled into light atoms like hydrogen and helium.
有些能量凝结成了粒子，这些粒子组合形成了轻原子如氢和氦。
Some of this energy congealed into particles, which assembled into light atoms like hydrogen and helium.
有些能量凝结成了粒子，这些粒子组合形成了轻原子如氢和氦。
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