大树为我们提供荫蔽、制造氧气，让我们享受大自然的美丽。
不过，事实仍然是，仅仅改变氧气浓度一项指标，蜻蜓的体型就自然增大了。遗憾的是，我们不能把这些巨型蜻蜓放到野外去对付那些致人死命的蚊子。
Still, the fact remains that a simple change in oxygen levels produced naturally giant dragonflies--too bad we can't release them into the wild to take care of those deadly mosquitoes .
的突变也阻止了细胞的生产压力颗粒，氧气水平低的压力造成的神经元的自然防御。
The mutations also prevented the cells from producing stress granules, the neurone's natural defence from stress caused by low oxygen levels.
野火是种强大的自然力量，只要有燃料、氧气和热量就能燃烧。
Wildfires are powerful forces of nature that can burn for as long as they have fuel, oxygen and heat.
医生表示，久而久之，肺部的这种损坏会干扰肺部氧气和二氧化碳的自然交换。
Doctors say that over time the damage interferes with the natural exchange of oxygen and carbon dioxide in the lungs.
通过将氧气从湖、池塘和蓄水池的底部排入，所有水层都变得有活性，原本的自然系统恢复。
By putting oxygen into your lake, pond, or reservoir from the bottom all levels of water are made livable and nature's own system is restored.
臭氧一种气态氧气的同素异形体，O3在紫外线辐射下通过电子放射或暴晒从双原子氧气自然形成。
A blue gaseous allotrope of oxygen, O3, formed naturally from diatomic oxygen by electric discharge or exposure to ultraviolet radiation.
其分子式为O3，是氧气的同素异形体，具有它自身的独特性质，在自然条件下，臭氧是略带有特殊新鲜气味的淡蓝色气体。
Its Molecular Formula for ozone, oxygen is the same allotrope, with its own unique character, in natural conditions, the ozone is slightly special light blue fresh smell of gas.
但是氧气可以让你做强度更大的运动，并且延长运动时间，这样一来，自然可以帮助你消耗更多的卡路里。
However, it can definitely help you be able to exercise harder and for longer periods of time, which should result in more calories burned.
一种以阻断氧气，破坏自然对流，使火焰在自身产生的二氧化碳气体中窒息的方式灭火的人力灭火机。
The utility model discloses a manual fire extinguisher in the manner of oxygen-insulating to break natural convection, which extinguishes the fire by the carbon dioxide generated by the fire itself.
氧化过程是人体的第一道防线，氧气是大自然自己的“秘密武器”预防感染。
The oxidation process is the body's first line of defense against infections. OXYGEN is Nature's own "secret weapon" against every sort of bacteria, fungus and virus.
氧化过程是人体的第一道防线，氧气是大自然自己的“秘密武器”预防感染。
The oxidation process is the body's first line of defense against infections. OXYGEN is Nature's own "secret weapon" against every sort of bacteria, fungus and virus.
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