stellar system

例句：

1. 1.The starry sky above is a reminder of the vastness of the universe.
   夜空中闪烁的星星提醒我们宇宙的广阔。
2. 2. Scientists are still trying to unravel the mysteries of the cosmic background radiation.
   科学家们仍在努力解开宇宙背景辐射的奥秘。
3. 3.In our galaxy, there are billions of stars that make up the stellar system.
   在我们的银河系中，有数十亿颗恒星组成了恒星系统。