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aurora australis

noun
🔊/əˌrɔːrə ɒˈstreɪlɪs/
🔊/əˌrɔːrə ɔːˈstreɪlɪs/
 [singular]
(also the Southern Lights [plural])
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  1. bands of coloured light that are sometimes seen in the sky at night in the most southern countries of the world南极光Topics Spacec2