Always say goodbye before you hang up the phone.

别忘了在挂断电话之前要与对方说再见。

youdao

We say goodbye to him before he goes to Friday prayers and I never know if he will come home again in the evening.

我们在他去周五祷告前互相道别，但我却根本不知道晚上他是否可以平安回家。

youdao

Polish captain Andrzej (Artur Zmijewski) says goodbye to his daughter before being shipped east by the Russians in the film Katyn

在电影《卡廷惨案》中，波兰上尉Andrzej (Artur Zmijewski)被苏联人运往东部之前和女儿道别

youdao

One hour before landing, Lovell,Swigert and Haise said thanks and goodbye to their lifeboat, the lunar module.

VOA: special.2009.07.22

Benedict XVI's driver wept as he said goodbye before helping the pontiff into the black sedan that ferried him to the helipad.

WSJ: Pope Bids Faithful a Farewell In Emotional, Historic Exit

He explained that before he left for work the following morning, he had kissed Miss Wells-Burr goodbye.

BBC: Catherine Wells-Burr

And on the morning of May 9th, 2008, I kissed my wife goodbye before being wheeled into an operating room, where Dr. Robert Rosenwasser of Thomas Jefferson Hospital proceeded to cut through my skull, recess my brain, and clip off the offending artery.

FORBES: Five Years After A Brain Aneurysm, Fear Of Dying Can't Make Me Quit Living