柯林斯词典corona /kəˈrəʊnə/ 1. N-SING The sun's corona is its outer atmosphere. 日冕[技术] 返回 corona剑桥词典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 ) （指在日食期间的）日冕；月华 返回 corona