The Pelican and North America nebulae are part of the same large and complex star forming region, almost as nearby as the better-known Orion Nebula.是什么意思_The Pelican and North America nebulae are part of the same large and complex star forming region, almost as nearby as the better-known Orion Nebula.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句