彩神app大发快3Rainbow over Ming'antu observing station of National Astronomical Observatories in Inner Mongolia

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Photo taken on July 27, 2019 shows a rainbow over the Ming'antu observing station of the National Astronomical Observatories of the Chinese Academy of Sciences, in Zhengxiangbai Qi, north China's Inner Mongolia Autonomous Region. (Xinhua/Liu Lei)

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