interstellar mediumˈintə:ˈsteləˈmi:djəm短语¹⁸⁰⁰⁹⁸⁺¹ 基本英英例句 星际介质 Noun: interstellar space including streams of protons moving from the stars A star is formed when a cloud of gas collapses from the interstellar medium toward high density. 一个气体云自星际物质中坍缩，密度达到很高时，即形成了一个恒星。 jukuu