planetary atom model

例句：

1. 1.The planetary scientists are studying the effects of climate change on the Earth's ecosystem.
   行星科学家正在研究气候变化对地球生态系统的影响。
2. 2.The solar system consists of the sun and all the planets in orbit around it.
   太阳系由太阳和围绕其轨道运行的所有行星组成。
3. 3. The solar system is a vast network of stars, planets, moons, and other celestial bodies.
   太阳系是一个由恒星、行星、月亮和其他天体组成的庞大网络。