North American Nebula in Emission-Line

• 北美星云

North American Nebula in Emission-Line的用法和样例：

例句

1. If you like finding hidden pictures, get set to find a Coathanger, the North Amercican Nebula and Ring Nebula.
   如果你想看些不是那么明显的画面，你可以用双筒望远镜看到狐狸座的星群，北美星云和环状星云。