This is a chance in a blue moon.
这可是个难得的机会。
She visits us once in a blue moon.
她难得来看我们一次。
It is a chance once in a blue moon.
这是一个千载难逢的好机会。
This is a chance once in a blue moon.
这是个千载难逢的好机会。
This is a chance once in a blue moon.
这是一次难得的机遇。
This is a chance once in a blue moon.
这是个千载难逢的机会。
He only comes here once in a blue moon.
他只是偶尔到这儿来一次。
Such a chance comes once in a blue moon.
这样的机会极其难得。
Such a chance comes once in a blue moon.
这种机会是千载难逢。
He gives us a treat only once in a blue moon.
他招待我们一顿可真是千载难逢。
That kind of chance comes once in a blue moon.
那是千载难逢的机会。
Opportunity like this comes once in a blue moon.
这样的机会实在千载难逢。
It is once in a blue moon to see her do housework.
看见她做家务真是极为罕见啊。
You shouldn't lose this once in the blue moon chance.
你不该错过这个难得的机会。
You get a chance like this only once in a blue moon.
这可是千载难逢的机会呢。
It was something that happens once in the blue moon.
这是千载难逢的事。
Once in a blue moon. It doesn't mean that the moon is blue.
（千载难逢），它的意思可不是月亮是蓝色的。
How I have been missing you! I haven't seen you in a blue moon.
我多么想念你呀！我已经好久没见到你了。
The second full moon in a particular month is called the blue moon.
某个特别的月份中的第二个满月就叫蓝月亮。
It's only once in a blue moon that you get an opportunity like that.
这样的机会对你来说真是千载难逢。
It is amazing! Once in a blue moon I got the first prize in the game.
太让我意外了，我竟然在比赛中得了第一。太难得了。
It is amazing! Once in a blue moon I got the first prize in the game.
太让我意外了，我竟然在比赛中得了第一。太难得了。
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