interstellar medium
柯林斯词典
1. N the matter occurring between the stars of our Galaxy, largely in the spiral arms, and consisting mainly of huge clouds of ionized, neutral, or molecular hydrogen 星際介質 ( abbr: ISM)
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1. N the matter occurring between the stars of our Galaxy, largely in the spiral arms, and consisting mainly of huge clouds of ionized, neutral, or molecular hydrogen 星際介質 ( abbr: ISM)