n. an acknowledgment or expression of goodwill at parting
n. the act of departing politely
n. 辞别, 再见, 再会
interj. 再会
1. We said our farewell at the train station.
我们在火车站告别了。
2. It was a sad farewell, but we promised to keep in touch.
这是一次伤感的告别，但我们承诺会保持联系。
3. She wrote a farewell letter to her friends before moving away.
她在搬走之前给朋友们写了一封告别信。