supernova remnant短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 超新星遗迹 In fact, the cosmic jellyfish is seen to be part of bubble-shaped supernova remnant IC443, the expanding debris cloud from a massive star that exploded. 这个宇宙级水母被看作是泡泡状的超新星遗迹 IC443的一部分。超新星遗迹是大质量恒星爆发时向外扩张的碎片云。 yeeyan