第三人称复数：aurorae; auroras
aurora基本解释
名词北极光; 曙光; 晨曦; 朝霞
aurora英英释义
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