第三人称单数:aurorae; auroras
3. 七彩网·英语单词大全
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
[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;e.g. we got up before dawn
[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;they talked until morning
[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;Synonym: dawndawningmorningfirst lightdaybreakbreak of daybreak of the daydayspringsunrisesunupcockcrow