solar system

英 美
  • 太阳系
  • solar adj.太阳的;太阳能的
  • system n.系统;体系;身体;制度
Noun:
  1. the sun with the celestial bodies that revolve around it in its gravitational field

    1. The solar system was formed 4.5 billion years ago.
      太阳系是四十五亿年前形成的。