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.
这是个千载难逢的机会。
This is a chance once in a blue moon.
这是一次难得的机遇。
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。
Once in a blue moon is an informal phrase.
（千载难逢）是一个非正式短语。
Sichuan earthquake is once in a blue moon.
四川地震是百年一遇。
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 get a chance like this only once in a blue moon.
这可是千载难逢的机会呢。
How often do you drink beer? B: Eh... once in a blue moon!
你多久喝一次啤酒？B：呃……我难得喝一次！
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。
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。
Don't give up a such a good opportunity; it only comes once in a blue moon.
不要放弃这个好机会；那是非常难得的。当副词用。
If you only send faxes once in a blue moon, do it from Staples or a copy shop.
如果您只发送传真一次在一蓝色的月亮，也从史泰博或复印店了。
If you only send faxes once in a blue moon, do it from Staples or a copy shop.
如果您只发送传真一次在一蓝色的月亮，也从史泰博或复印店了。美。
I have almost forgotten what Jack looks like. I see him once in a blue moon now.
我几乎已经忘了杰克的模样了。现在我只是极难得地见过他一次。
The schoolmaster said that he was able to go to a play only once in a blue moon.
太实：这位校长说，他只在月亮变蓝时才去看戏。
We seldom met each other anymore, maybe once in a blue moon on a family gathering.
我们很久才见一次面，在大家庭的聚会上。
We seldom met each other anymore, maybe once in a blue moon on a family gathering.
我们很久才见一次面，在大家庭的聚会上。
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