galactic circle

例句：

1. 1. The galactic ring is a fascinating feature of our solar system.
   银河系环是我们太阳系的迷人特征。
2. 2. The discovery of the galactic ring has sparked new theories about the origins of the universe.
   发现银河系环引发了关于宇宙起源的新理论。
3. 3. The galactic ring is believed to be the remnant of a massive star that exploded in the early days of our galaxy.
   银河系环被认为是我们星系早期一颗巨大恒星爆炸的遗迹。