水分子由两个氢原子和一个氧原子构成。
A molecule of water consists of two atoms of hydrogen and one atom of oxygen.
增氧健身操能加快心跳，并有助于消耗脂肪。
Aerobic exercise gets the heart pumping and helps you to burn fat.
它也可以按照组成部分被分解——氧和氢。
It could also be broken down into its component parts—oxygen and hydrogen.
当硫化氢与水中的氧反应，得到的就是硫酸。
When hydrogen sulfide reacts with the oxygen in the water, the result of that is sulfuric acid.
水可分解为氢和氧。
Water can be resolved [decomposed] into hydrogen and oxygen.
因此，脊椎动物的无氧能量储备与动物的大小成正比。
Thus the anaerobic energy reserves of a vertebrate are proportional to the size of the animal.
有机物可能会进行部分分解，并耗尽沉积物中的溶解氧。
The organic matter may partially decompose, using up the dissolved oxygen in the sediment.
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.
笑会造成心脏和血液循环功能的短期变化，增加心率和耗氧量。
Laughter produces short-term changes in the function of the heart and blood circulation, increasing heart rate and oxygen consumption.
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.
由于铝总是和其他元素结合在一起，最常见的是和氧结合，所以在自然界中找不到游离的铝。
Nowhere in nature is aluminum found free, owing to its always being combined with other elements, most commonly with oxygen.
由于铝总是和其他元素结合在一起，最常见的是和氧结合，所以在自然界中找不到游离的铝。
Nowhere in nature is aluminum found free, owing to its always being combined with other elements, most commonly with oxygen.
要是他们没找到橡皮糖，在支架里的两个人，等他们的氧供应用完了，便在轨道里窒息而死了。
If they had failed to find the gumdrop, the two men in spider would have been stranded in the orbit to die when their oxygen supply ran out.
这篇文章提出的脊椎动物的无氧能量储备总量与脊椎动物的体型成正比，是基于以下哪些假设？
The passage's suggestion that the total anaerobic energy reserves of a vertebrate are proportional to the vertebrate's size is based on which of the following assumption?
随着大量的水通过蒸发被抽离，并以雪的形式沉淀形成冰川冰，海洋中氧同位素的比率就发生了变化。
The oxygen isotope ratio of the ocean changes as a great deal of water is withdrawn from it by evaporation and is precipitated as snow to form glacial ice.
主要的差别是，相比于太阳，阿连德陨石缺失了大部分的挥发性元素，例如氢、碳、氧、氮和稀有气体。
The major difference is that Allende is depleted in the most volatile elements, like hydrogen, carbon, oxygen, nitrogen, and the noble gases, relative to the Sun.
能以无氧方式产生的能量是存在的糖原量的功能——在所有脊椎动物中，糖原量约占其肌肉湿重的0.5%。
The amount of energy that can be produced anaerobically is a function of the amount of glycogen present—in all vertebrates about 0.5 percent of their muscles' wet weight.
石英是石英——由四个氧离子围绕的硅离子——200万年前的更新世石英和5亿年前的寒武纪石英之间没有任何区别。
Quartz is quartz—a silicon ion surrounded by four oxygen ions—there's no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago.
两个氢原子和一个氧原子结合组成一个水分子。
Two atoms of hydrogen combine with one atom of oxygen to form a molecule of water.
过去给水族馆的水过滤和充氧的尝试都已失败了。
Previous attempts at filtering and oxygenating aquarium water had failed.
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.
因此，更多的重氧同位素留在了海洋里，并被海洋有机物吸收。
Thus, more of the heavy isotope is left behind in the ocean and absorbed by marine organisms.
在冰川期，较轻的氧-16比较重的氧-18更容易从海洋表面蒸发。
During glaciations, the lighter oxygen-16 has a greater tendency to evaporate from the ocean surface than the heavier oxygen-18 does.
水中几乎所有的氧都是氧16，但每一千个分子中就有几个含有较重的同位素18。
Almost all the oxygen in water is oxygen 16, but a few molecules out of every thousand incorporate the heavier isotope 18.
在有孔虫壳的方解石中发现的氧-16和氧-18的比例取决于该生物生存处的水温。
The ratio of oxygen-16 to oxygen-18 found in the calcite of a foraminifer's shell depends on the temperature of the water in which the organism lived.
在水中大多数氢原子和氧原子是稳定的，但这两个元素也有微量以较重的同位素形式存在。
Most hydrogen and oxygen atoms in water are stable, but traces of both elements are also present as heavier isotopes.
当空气温度较高时，含有较重同位素氧-18的蒸汽比含有氧-16的蒸汽更容易凝结，并形成雪状的降水。
When the air was warm, vapor containing the heavier isotope, oxygen-18, condensed and formed precipitation, in the form of snow, more readily than did vapor containing oxygen-16.
研究人员对间冰期气候的线索来自保存在GRIP 冰芯中的两种略微不同类型的氧——即同位素氧-16和氧-18的比率。
Researchers' clues to the Eemian climate come from measurements of the ratios of two slightly different types of oxygen, isotopes oxygen-16 and oxygen-18, preserved in the GRIP core.
所有样品中都发现有需氧芽孢菌。
氧自由基学说应该是老年性聋的发病病因。
The oxygen radicals theory should be the etiology of presbyacusis.
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