aurora borealis / aurora australis

aurora borealis           北極光

aurora australis          南極光



https://tw.dictionary.yahoo.com/dictionary?p=aurora+borealis
https://tw.dictionary.yahoo.com/dictionary?p=aurora+australis





boreal     北的；北風的；北極的

KK  

[ˋborɪəl]   

austral    南的；南國的；南方的；南部的

KK  

[ˋɔstrəl]






https://tw.dictionary.yahoo.com/dictionary?p=boreal
https://tw.dictionary.yahoo.com/dictionary?p=austral