It is snowing down south ! Once in blue moon 意思

It is snowing down south ! Once in blue moon 意思 it happend once in the blue moon there is once in blue moon i havetogotowork,it's a blue Mond 请问 once in blue moon Once in a blue moon 这句话话是啥意思啊 This is a chance once in a blue moon, once in a blue moon 意思和once in a while一样嘛? Once In A Blue Moon 歌词 It was something that happens once in the blue moon.这是千载难逢的事 once in a blue moon 为什么 解释为 机会难得,绝无仅有? 请用once in blue moon造句,多造几句..谢谢 "I haven't seen her once in a blue moon.