短语词组短语auroral emission 极光发射auroral belt [地物]极光带auroral substorm [地物]极光亚暴;极光次暴auroral spectra 极光光谱;极光谱auroral footprints 极光足印auroral streamer 极光幕;极光流auroral zones 极光带;极光地带auroral ray 极光射线auroral temperature [地物]极光温度 返回 auroral