彩虹要在下雨後出太陽時出現，還不能是中午，陽光要斜著照射到水汽上折射出來。：））

來源: 綠島陽光於 2021-10-10 08:56:20 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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