They get oxygen from the air, so they must return to the surface regularly to breathe.
它们从空气中获得氧气，所以它们必须不时地回到海面上呼吸。
The hydrogen in the car is mixed with oxygen from the air to make electricity for the car.
汽车中的氮气与空气中的氧气混合后为汽车发电。
The lungs absorb oxygen from the air and give the blood the oxygen it needs and relieve it of carbon dioxide.
肺从空气中吸入氧气，为血液提供所需要得氧气，并帮助排除二氧化碳。
A lithium-air battery pulls oxygen from the air for its charge, so the device can be smaller and more lightweight.
锂空气电池从空气中吸收氧气充电，因此这种电池可以更小、更轻。
Oxygen from the air then combines with carbon and hydrogen atoms to release yet more heat, which breaks down more fuel.
然后空气中的氧气与二氧化碳和氢原子结合并释放出更多的热量，这些热量又可以使更多燃料的烃链断裂。
When you breathe, air enters your lungs. The blood stream takes oxygen from the air in the lungs and carries it to all parts of your body.
你呼吸时，空气进入肺。血液从肺中的空气获得氧，并把氧输往身体各部分。
The breathing techniques used in yoga (pranayama) aid in removing toxins from the body, and allow the body to extract more oxygen from the air.
瑜伽的呼吸方法协助身体排除毒素，从空气中吸入更多氧气。
Like other hydrogen cars, the Riversimple Urban car (RUC) is powered by a fuel cell that combines hydrogen with oxygen from the air to release energy and nothing more toxic than water.
和其他氢能源车一样，Riversimple Ur banCar (RUC)采用燃料电池，电池将来自空气的氢和氧进行混合释放能量，除了水不排放任何有害物质。
More oxygen from the air, equates to more life sustaining oxygen to all the cells, including the brain. Only when enough oxygen is getting to all the tissues, can full repair and growth occur.
吸入的氧气越多，相当于身体的所有细胞，包括大脑都能够被这维系生命的气体滋养。
Blood in the pulmonary circulation brings carbon dioxide from the tissues to be exhaled and takes up oxygen from the air in the pulmonary alveoli to carry it to the heart and the rest of the body.
肺循环中的血液将从组织处携带的二氧化碳排出，并将肺泡中的氧气运送至心脏和全身。
A century earlier, Henry Cavendish had noted the existence of a residual gas when oxygen and nitrogen are removed from air, but its importance had not been realized.
一个世纪前，亨利·卡文迪什注意到当空气中的氧气和氮气被除去，还有其他剩余气体存在，但人们还没有认识到它们的重要性。
Other than releasing oxygen in the air, money plant can also eliminate formaldehyde from the air that is commonly released by cigarette smoke and adhesives (used with wood furnishings).
绿萝——除了向空气中释放氧气，绿萝还能消除空气中的甲醛(通常来自香烟燃烧产生的烟雾或木制家具的黏合剂)。
Photosynthesis by phytoplankton removes carbon dioxide from the air and produces oxygen.
浮游植物通过光合作用消耗空气中的二氧化碳产生氧气。
Some of the carbon therefore ends up as soot, rather than carbon dioxide, and oxygen that should be combining with carbon combines with nitrogen from the air instead.
其中的一些碳最终以烟雾而非二氧化碳的形式排放出来，而那些本该与碳结合的氧分子则转而与空气中的氮结合。
Farther out, oxygen is sucked from the air and people may be crushed by a pressure wave.
更大范围内空气中的氧气被“抽走”，人也可能受到压力波冲击。
NOx is produced when the nitrogen from the air reacts with oxygen under high engine temperature and pressure conditions.
在高温高压下，空气与氧气反应，产生了氮氧化物。
Here's why: certain nutrients are unstable when exposed to oxygen (from the air), heat (from cooking) and light.
原因如下：当与(空气中的)氧气，(烹饪时的)温度接触或者接受光照时，某些蛋白质将变得不稳定。
Andrews air cell. Oxygen drawn from the air reacts within the porous carbon to release the electrical charge in this lithium air battery.
在这种STAIR电池的原理图中，从空气里抽取的氧气与电池里的锂离子在多孔碳材内部发生反应，并释放出电流。
Trees are natural air conditioners. They take harmful gas from the air, and release oxygen into the air.
树木是天然的空气净化器，他们可以吸收空气中有害的气体并向空气中释放氧气。
From the pump design point of view, an inlet, two outlets, plus an air intake, you can achieve filtering, surfing function and processing of oxygen.
从此泵设计上看，一个进水口，两个出水口，另加一个进气口，可以实现过滤、冲浪和加氧功能。
It would instead just grab Hydrogen and Oxygen atoms from out of the air and assemble you out of those (one Hydrogen atom is the same as another, after all).
取而代之的是，只要在空气里抓一把氢和氧的原子，然后把它们组装起来，就是你了(毕竟氢原子们总是一模一样的)。
It would instead just grab Hydrogen and Oxygen atoms from out of the air and assemble you out of those (one Hydrogen atom is the same as another, after all).
取而代之的是，只需正在空气里捕一把氢和氧的本女，然后把它们拆装起来，就是你了(究竟氢本女们分是如出一辙的)。
But the energy used to separate oxygen from air before burning is almost as great as that needed to filter out nitrogen afterwards, leading to a similar loss of efficiency.
但是燃烧前将氧气从空气中分离所需的能源几乎不亚于上述将氮气过滤所需的耗费，这就使得两者在效率损失上不相上下。
The imbalance between oxygen requirement from Linz-Donawitz process steel-making system and oxygen supply of supporting air separation unit is analyzed.
分析了氧气顶吹转炉炼钢的氧气需求量与所配套空分设备氧气供应量之间的不均衡关系；
In many processes, the oxygen for reaction can be obtained from the use of air. However, direct use of oxygen, or enrichment of the air with oxygen, is necessary for some processes.
在许多过程中，用于反应的氧可以从空气中获得。但是对于某些过程，直接使用氧或富氧空气是必要的。
Results from our model revealed that oxygen uptake by diffusion from the air, under normal conditions, was limited to the out most layer of the skin and did not penetrate beyond the germinal layer.
研究结果表明，在正常生理条件下，皮肤从空气中通过扩散输运所获取的氧仅限于表皮角化层，而不能到达表皮生发层。
The only part of the human body that has no blood supply is the cornea. It takes its oxygen directly from the air.
人体中唯一没有血液供应的是角膜。角膜直接从空气中获取氧。
Experts say people should know about other health concerns that can strike when traveling by air. One of these is hypoxia. It results from a lack of oxygen to the brain.
专家们说人们应该了解在乘飞机旅行时其他能够侵袭身体健康的问题，其中一个是组织缺氧，它是由大脑缺氧造成。
The principle and status of the separation of nitrogen and oxygen from air by high-gradient magnetic field are introduced briefly.
介绍了高梯度磁场氮氧分离的原理及技术现状。
The principle and status of the separation of nitrogen and oxygen from air by high-gradient magnetic field are introduced briefly.
介绍了高梯度磁场氮氧分离的原理及技术现状。
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