1·The first song, "Blue Moon," didn't go too badly except that everyone talked throughout.
第一首歌《蓝月亮》效果还不算太差，只是所有的人自始至终都在说话。
—— 《柯林斯英汉双解大词典》
2·The super blue moon also occurred during a total lunar eclipse.
超级蓝月亮也会发生在月全食期间。
3·Just once in a very blue moon.
在难得一见的蓝色月光下。
4·But what is a blue moon?
但是什么是蓝月亮呢？
5·This is a chance once in a blue moon.
这是个千载难逢的好机会。
6·He only comes here once in a blue moon.
他只是偶尔到这儿来一次。
7·Such a chance comes once in a blue moon.
这样的机会极其难得。
8·Blue Moon,... you saw me standing alone.
蓝色的月峦…你看见我孤独一人。
9·Once in a blue moon is an informal phrase.
（千载难逢） 是一个非正式短语。
10·Sichuan earthquake is once in a blue moon.
四川地震是百年一遇。