柯林斯詞典corona /k??r??n?/ 1. N-SING The sun's corona is its outer atmosphere. 日冕[技術] 返回 corona劍橋詞典environment a circle of light that can sometimes be seen around the moon at night , or around the sun during an eclipse (= a time when the moon is positioned exactly between the sun and the earth ) （指在日食期間的）日冕；月華 返回 corona