名词
中文翻译：彗星头同义词
同义词：
['comet head', 'cometary head']
例句：
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1. The cometary head isthe brightest part of the comet.
彗星头是彗星最亮的部分。
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2. The cometary head was visible from Earth forseveral days.
彗星头在地球上可见数日。
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3.The cometary head is believed tobe responsible for the tail's formation.
人们认为彗星头是形成尾巴的原因。