P Cygni star

例句：

1. 1.The P Cygni star is a fascinating object in the night sky.
   猎户座星云是夜空中一个令人着迷的天体。
2. 2. The Orion nebula is a famous galaxy that can be seen from Earth.
   猎户座星云是一个著名的星系，可以从地球上看到。
3. 3.The Orion cloud is a large gaseous nebula that is visible from space.
   猎户座星云是一个大型的气体星云，可以从太空中看到。