面包含有碳水化合物，这是一种由碳、氢和氧组成的化学物质。
Bread contains carbohydrates, which are chemicals made up of carbon, hydrogen, and oxygen.
它含有非常少的氢和氦。
然后这些装置将氢和氧合成水，并在这个过程中释放电力。
These devices then combine hydrogen and oxygen to make water and liberate electricity in the process.
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。
By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.
水可分解为氢和氧。
Water can be resolved [decomposed] into hydrogen and oxygen.
水含有氢和氧。
他们就像是数学世界的氢和氧一样。
They are like the hydrogen and oxygen of the world of mathematics.
发电的燃料房就是使用氢和氧。
Fuel cells to generate electricity operate on hydrogen and oxygen.
其他五种分别是：碳、氧、氮、氢和硫。
The others are carbon, oxygen, nitrogen, hydrogen and sulfur.
水可以分解为氢和氧。
水是化合物它可被分解成氢和氧这两种成分。
Water is a compound because it can be split into its components, hydrogen and oxygen.
科学家们有一个从氢和氧中提取能量的爆炸性较小的配方。
Scientists have a less explosive recipe for extracting energy from hydrogen and oxygen.
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.
这颗小行星将需要具备水使殖民者可以提取氢和氧的火箭燃料。
The asteroid would need to posses water so that colonists could extract oxygen and hydrogen for rocket fuel.
这种依靠人工的将水分离成氢和氧的过程也是需要消耗能量的。
Instead it has to be manufactured by splitting water into hydrogen and oxygen, a process that consumes energy.
卫报称他们要建造像叶子产生清洁燃料氢和甲醇一样的人工系统。
They want to build artificial systems that can do the same as leaves to generate clean fuels such as hydrogen and methanol, the Guardian reported.
当宇宙最初从大爆炸中诞生时，整个世界基本上就是由氢和氦组成的。
When the universe emerged from the Big Bang, it consisted almost entirely of hydrogen and helium.
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。
Nearly all their mass is made up of hydrogen and helium, giving them compositions like that of the sun.
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。
Like its bigger neighbor Jupiter, Saturn is a gas planet made mostly of hydrogen and helium.
其中第一个步骤就是将水分解为氢和氧，这极其困难，因为水分子非常稳定。
The first of these involves splitting water into hydrogen and oxygen, a notoriously difficult thing to do because water molecules are so stable.
这幅来自哈勃太空望远镜的图像显示老位于船底座星云的冰冻成柱状的氢和尘埃。
These pillars of cold hydrogen and dust, imaged by the Hubble Space Telescope, are located in the Carina Nebula.
一些二氧化碳会被海水吸收，改变海水中氢和碳酸盐离子的比例，使得海水酸化。
Some of this carbon dioxide is absorbed by ocean water, altering the proportion of hydrogen and carbonate ions, and making the water more acidic.
然而在外部区域，太阳风变得十分温和，使得由氢和氦构成气态巨行星得以存在。
The solar wind was much weaker in the outer regions, however, resulting in gas giants made up mostly of hydrogen and helium.
有种依赖一氧化碳生存的生物，我们利用其还原能力使水分子破裂，制造出氢和氧。
We have one organism that lives off of carbon monoxide, and we use as a reducing power to split water to produce hydrogen and oxygen.
这种汽车可以将氢储存在车上，然后将氢和大气中的氧气在电池箱中混合，产生电力。
It is a car that stores hydrogen on board, and, mixing the hydrogen and atmospheric oxygen in the fuel cell stack, creates electricity, said Mittleman.
虽然单独除去氧本身是困难的，氢和氧很容易结合成水，而水是可以加热蒸发除去的。
Although it would be difficult to remove the oxygen by itself, hydrogen readily combines with oxygen to form water, which can be heated to steam and easily removed.
为了进行这一考察，探测器近期开始测量从金星散逸的一些微量气体，尤其关注的是氢和氧。
To do this, the spacecraft recently began taking measurements of some of the trace gasses being given off by Venus, looking specifically for hydrogen and oxygen.
这个发现同时也是对行星形成理论的一次挑战，该理论认为恒星需要更多的氢和氦才能形成行星。
The finding also challenges theories of planet formation, which hold that stars need more than hydrogen and helium to produce planets.
蓝色和紫色是来自较轻的气体比如氢和氦，而更低点的氮气能在绿色极光的底部添上红色的边缘。
Blues and purples are created by lighter gases such as hydrogen and helium, while low-level nitrogen can add red fringes to the bottoms of green auroral curtains.
也有的是纯粹的化学，将纤维素分解成一种氢和碳的气体混合物，然后再将其合成更为有用的东西。
And some go for pure chemistry, breaking the cellulose down into a gaseous mixture of hydrogen and carbon monoxide before building it back up into something more useful.
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