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1. The cocoon star is a rare and mysterious object that has fascinated scientists for decades.
茧星是一种罕见且神秘的物体，几十年来一直吸引着科学家的关注。
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2. In the night sky, the cocoon star is a bright point of light that can be seen from far away.
在夜空中，茧星是一个明亮的光点，可以从远处看到。
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3. The cocoon star is believed to have been formed by a comet impacting the Earth millionsof years ago.
据信，茧星是由数百万年前一颗彗星撞击地球形成的。