他突然起身不辞而别。

He upped and left without telling anyone.

七月，她远走高飞，对我不辞而别。

July, she will fly, and give no warning to her flight.

你怎么不辞而别离开派对？摩根家庭对此很不高兴。

How could you leave the party without saying a word? The Morgan family was so unhappy about it.

最后，当潜水船到达挪威海岸时，阿龙纳斯不辞而别，把他所知道的海底秘密公布于世。

Finally, when the Norwegian diving vessel arrived at the coast, Aaron Jonas leave without saying good-bye, he knows the secret submarine known to the world.