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大气层是地球的保护层,它不仅为我们阻挡了来自太阳光中各种有害的射线,还使地球的温度一直处于人体能适应的范围。在十九世纪,科学家埃米尔经过大量的研究,发现并证实了大气层的存在,为以后对大气层展开详细的研究打下了基础。