solar system
1
太阳系, 太阳系
the sun and the group of planets orbiting around it, including the earth
- Earth is one of eight planets in the solar system.
地球是太阳系中八颗行星之一。
- Scientists study the solar system to understand planetary formation.
科学家研究太阳系以了解行星的形成。
- Some moons in the solar system may have conditions suitable for life.
太阳系中的一些卫星可能具有适合生命的条件。
- Space probes have explored different parts of the solar system.
太空探测器探索了太阳系的不同部分。
- Scientists believe the solar system formed over 4.5 billion years ago.
科学家认为太阳系形成于45亿多年前。