planetary magneto-sphere

例句：

1. 1.The study of the planetary magnetic field is crucial for understanding our solar system.
   研究行星磁场对于理解我们的太阳系至关重要。
2. 2. The planetary magnetic field plays a significant role in the formation of meteoroids.
   行星磁场在陨石的形成中起着重要作用。
3. 3. The planetary magnetic field has been found to affect the movement of satellites.
   已经发现行星磁场会影响卫星的运动。