Explanation: Clouds of glowing gas mingle with lanes of dark dust in the Trifid Nebula, a star forming region toward the constellation of Sagittarius.是什么意思_Explanation: Clouds of glowing gas mingle with lanes of dark dust in the Trifid Nebula, a star forming region toward the constellation of Sagittarius.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句