They say a blue moon is the " extra" moon in a season with four full moons.

他们说蓝月是一季中，四个满月里多出来的那个满月。

Another time a man by the name of Bona Dies lasted for four full days and nights.

还有一次， 一个名叫博纳迪斯的人坚持了整整四个昼夜。

But in the occasional season with four Full Moons, the third is considered as a Blue Moon.

但在偶尔出现四次满月的季节，第三次被认为是蓝月。

" My dear man, I think we'll manage it, with four full days ahead of us on this steamer! I'm really not going off to the Riviera or any place, you know" !

“我亲爱的伙计， 我想我们会成功的， 在这艘轮船上我们还有整整四天的时间！我真的不会去里维埃拉或任何地方， 你知道的” ！