The middle atmosphere, stretching from roughly 10 to 100km altitude, is a region of complex physical, photochemical and dynamic interaction. Simultaneously, the middle atmosphere is susceptible of the solar activity.
在处于大约10-100Km高度的中层大气中存在着许多复杂的物理、化学和动力学过程，中层大气也是对太阳活动极为敏感的大气区域。
参考来源 - 武汉上空中层大气的瑞利激光雷达观测与研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The powerful eruption sent plumes of ash streaming over North Africa and the Middle East, and pumped vast quantities of sulfur dioxide into the atmosphere.
火山喷发致使大量的二氧化硫也排放到大气中，大量烟尘覆盖了非洲北部及中东部地区。
“Watsons understands that they are not just selling cheap, so their stores are designed very well for the upper middle class: they have a nice, bright, clean, airy atmosphere,” he said.
小山表示：“屈臣氏明白他们不是在打廉价牌，因此他们的门店设计非常适合中上阶层：干净、明亮、空气清新。”
Since April 2006, CloudSat's radar has, however, been providing a globe-circling slice of the middle layer, a previously unobserved part of the atmosphere.
然而2006年4月以来，“探云”卫星的雷达就一直在提供全球范围内的中间云层样板，这是以前对大气研究从未涉及的领域。
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