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"a prominent green line in the spectrum of the auroras is called the `auroral line'"
"a dim auroral glow"
同义词： aurorean
以上来源于: WordNet
So scientists have started looking for the cause of the auroral variations.
因此，科学家们已经开始寻找极光变化的原因。
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This high result was interpreted to reflect previous auroral activity.
这一高结果可以用以前的极光活动来解释。
The darkness waned and a faint auroral glow began to appear in the east.
黑暗即将过去，一道微弱的曙光开始出现在东方。
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