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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.
收听单词发音
1
Pluto
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| n.冥王星 | |
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