Celerina

例句：

1. 1. The celerina is a fascinating object in our solar system.
   彗星是我们太阳系中一个令人着迷的天体。
2. 2. Celerina is a rare and mysterious object in the sky.
   彗星是一种罕见的、神秘的天体。
3. 3. The discovery of a new celerina has sparked excitement among astronomers.
   新彗星的发现激发了天文学家们的兴奋。