Blue Moon

中文含义：蓝月亮，指每个月中出现的第二个满月，也用来形容稀有的事件。英语词性：proper noun美式音标： /blu mun/同义词：occasional or rare event易混淆单词：full moon, new moon双语例句：

  1. It’s not often that you see a blue moon, so we should take the opportunity to enjoy it.
  2. There was a blue moon last night, and it was so beautiful.