重返大气层的航天器受到重力的作用。
Spacecraft which are re-entering the earth's atmosphere are affected by g forces.
有的细菌利用光合作用所产生的氧气，进一步改变了大气层，使其成为今天的样子。
Bacteria that used oxygen produced by photosynthesis further altered the atmosphere to what we find today.
后来一些天文学家提出，大气中的氨可能起到温室气体的作用。
Then some astronomers came up with the idea that atmospheric ammonia might have acted as a greenhouse gas.
一个越来越有吸引力的理论认为，大气中二氧化碳的减少引发降温趋势，这趋势导致冰川作用。
An increasingly attractive theory holds that decreases in atmospheric carbon dioxide start the cooling trend that leads to glaciation.
因为早期的地球大气中缺乏氧气，所以也缺乏起保护作用的臭氧层屏障。
Because early Earth lacked oxygen in its atmosphere, it also lacked a protective ozone barrier.
举例说，最初的细菌消耗了二氧化碳，从大气中吸收了它并限制这一温室气体的作用。
The first bacteria, for instance, consumed carbon dioxide, removing it from the atmosphere and limiting the effect of this greenhouse gas.
对于理解地球大气、陆地和海洋在真实过程中相互作用的机制及其原因，模型和观测两者都是不可或缺的。
Both are necessary in understanding how and why Earth's atmosphere, land, and oceans function together as they do.
它们中的碳来自光合作用，来自大气层，因此在它们燃烧时并没有直接对全球变暖造成影响。
Their carbon comes, via photosynthesis, from the atmosphere, so they do not contribute directly to global warming when they are burned.
另一个作用是保持水箱里的温度，防止热量全部散发到大气里。
It will also help maintain heat in the tank versus it all venting out to the atmosphere.
磁暴还会对高层大气存在加热作用，改变其密度计组成，中断无线电通信与GPS装置。
Magnetic storms also heat the upper atmosphere, changing its density and composition and disrupting radio communications and GPS units.
此观念基于火山爆发对大气的冷却作用。
The concept is based on the cooling effect of volcano eruptions on the atmosphere.
极光这一现象是由“太阳风”所造成的。“太阳风”是太阳发射的带电原子内粒子流，它和大气层中的分子相互发生作用就引起了极光。
The phenomena are caused by the "Solar Wind" - streams of electrically charged sub-atomic particles emitted by the Sun - interacting with molecules in the atmosphere.
其一是黑碳，另一样是臭氧，后者对阻止平流层的紫外线起着至关重要的作用，但对大气中的植物和人类有害。
One is black carbon and the other is ozone, which is vital for blocking ultraviolet rays in the stratosphere but hazardous in the bits of the atmosphere where plants live and people have to breathe.
如果天气状况很糟糕，通讯卫星就不能正常发挥作用，大气中的电波交流也会受到破坏。
If it gets nasty, communications satellites may be knocked out and radio communications within the atmosphere disrupted.
在其5年的使命期间，它要观测太阳磁场，更深的了解太阳在地球的大气化学和气候方面所发挥的作用。
During its five-year mission, it will examine the sun's magnetic field and also provide a better understanding of the role the sun plays in Earth's atmospheric chemistry and climate.
在金星上，热的水蒸气上升到大气层中，在大气层中水分子在阳光的作用下分解。
On Venus, hot water vapor rose high into the atmosphere where water molecules were split apart by the action of sunlight.
海洋科学家将此归结于这一事实：由于大气层中CO2浓度上升的副作用，海洋正在越来越呈酸性。
Marine scientists attribute this to the fact that the ocean is increasingly acidic, as a side-effect of rising CO2 levels in the atmosphere.
极光是由地球大气上层的气体分子与来自太阳的高能带电粒子相互作用产生的。
Aurorae are caused by the interaction between energetic charged particles from the sun and gas molecules in the upper atmosphere of the Earth.
该行星似乎也拥有大气层和重力作用——其表面也可能有流水存在。
The planet appears to have an atmosphere, gravity like our own – and could have flowing water on its surface.
研究人员还考虑了每种气体在大气中存在的时间，并观察这些气体如何相互作用，如何影响气候变化。
The researchers also considered how long each gas lingers in the atmosphere and looked at how those gasses interact to influence climate change.
THAAD雷达在目标采集、跟踪和识别致命目标中发挥了重要作用，有效支持在大气层内的拦截行动。
The THAAD radar played a critical role in acquiring, tracking and discriminating the lethal object in support of the low endo-atmospheric (inside the earth's atmosphere) intercept.
因为大气层负责海洋和空间的水汽交换他建议增建大气和年轻石质星球的地幔相互作用的模型。
Because atmospheres are responsible for releasing water from oceans into space, he suggests additional modeling of the interactions between the atmosphere and mantle of a young rocky planet.
因为大气层负责海洋和空间的水汽交换他建议增建大气和年轻石质星球的地幔相互作用的模型。
Because atmospheres are responsible for releasing water from oceans into space, he suggests additional modeling of the interactions between the atmosphere and mantle of a young rocky planet.
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