ultraviolet star

例句：

1. 1. The ultraviolet star is a rare and mysterious object in the universe.
   紫外线星是宇宙中一种罕见而神秘的天体。
2. 2. The discovery of this ultraviolet star has sparked new research in astronomy.
   这一紫外线星的发现激发了天文学的新研究。
3. 3. The ultraviolet star is believed to be a remnant from a massive star that exploded billions of years ago.
   紫外线星被认为是一个来自数十亿年前爆炸的巨大恒星的残留物。