supernovas
n.
（天文中的）超新星( supernova的名词复数 );
例句:
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The higher atomic number elements are created by supernovas.
来自SA
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It is the receding distances of Cepheid variables and Supernovas from our galaxy which has established expansion of Universe.
来自SA
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...Yet, no one disputes the formation of a star system and its interaction with stellar matter expelled during supernovas.
来自SA