once in a blue moon 意思和once in a while一样嘛?

Once In A Blue Moon 歌词 请问 once in blue moon there is a chance once in a blue moon This is a chance once in a blue moon, Once in a blue moon 这句话话是啥意思啊 I haven't seen her once in a blue moon. once in a blue moon 出处是哪里? once in a blue moon 为什么 解释为 机会难得,绝无仅有? once in a blue moon 意思和once in a while一样嘛? there is once in blue moon i havetogotowork,it's a blue Monday翻译 You only get a glance like this once in a blue moon! once in a blue moon 帮忙用这个造俩句子, You only get a chance like this once in a blue moon.这句话要怎么解释最好.in a blue moon要怎么解释. 请用once in blue moon造句,多造几句..谢谢 once in a blue room It was something that happens once in the blue moon.这是千载难逢的事Why is the blue moon,is there some special meaning in the blue moon,thanks a lot! in a blue moon什么意思 翻译短文： Have you ever heard someone use the phrase once in a blue moon ? People翻译短文： Have you ever heard someone use the phrase once in a blue moon ? People use this expression to describe something that th