2015-01-07 科学新发现：重新发现冥王星-23
时间：2018-12-27 作者：英语课 分类：探索与发现2015年
英语课
76 years after Pluto 1'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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Pluto
n.冥王星
参考例句：
Pluto is the furthest planet from the sun.冥王星是离太阳最远的行星。
Pluto has an elliptic orbit.冥王星的轨道是椭圆形的。