英语词汇circumzenithal arc怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	circumzenithal arc
释义	circumzenithal arc[,sə:kəm'zeniθəl] 【光学】环天顶弧
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