名词
中文翻译：Unknown
同义词：
['aurora', 'auroral', 'purple']
例句：
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1. The sky was painted with the colors of the aurora borealis.
北极光将天空染成了紫色。
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2. She wore a purple dress that matched her hair perfectly.
她穿着一件与她的发色完美匹配的紫色连衣裙。
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3. The aurora borealis is a natural wonder that can only be seen during the winter months.
极光是一种只有在冬季才能看到的自然奇观。