第三人稱(chēng)復數：aurorae; auroras
aurora基本解釋
名詞北極光; 曙光; 晨曦; 朝霞
aurora英英釋義
noun
1. an atmospheric phenomenon consisting of bands of light caused by charged solar particles following the earth's magnetic lines of force
2. the first light of day
e.g. we got up before dawn
they talked until morning
Synonym: dawndawningmorningfirst lightdaybreakbreak of daybreak of the daydayspringsunrisesunupcockcrow