2015-01-07 科学新发现：重新发现冥王星-23
时间：2015-07-20 05:46:12
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（单词翻译）
76 years after Pluto1's discovery and after 17 years of research and development, Nasa's new Horizon Spacecraft sets out for Pluto. Travelling at around a million miles a day, it's on a 9-year, 700-million-dollar journey to reach Pluto and review its secrets.
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