goodbye 
英 [ˌɡʊdˈbaɪ]  美 [ˌgʊdˈbaɪ] 
n. 再见

例句：
They prolonged their goodbyes for a few more minutes. 

他们又过了几分钟才分别。

He said his goodbyes knowing that a long time would pass before he would see his child again. 

他道了别，知道自己得过很长时间才能再见到孩子。

I said a hurried goodbye and walked home in the cold. 

我匆忙道别，然后冒着寒冷步行回家。

He wanted to say goodbye to you. 

他原本想和你说再见的。

They said goodbyes to each other. 

他们相互道别。